• Catfood Earth Themes
• Natural Theme
• Time Zones Theme
• Earthquakes Theme
• Catfood Earth Layers
• Day Map
• Clouds
• Night Map
• Time Zones
• Political Borders
• Places
• Earthquakes
• Volcanoes
• Weather Radar
• Catfood Earth Advanced
• Render Images
• Catfood Earth for Android
• Installation and Support for Catfood Earth
• Customer Reviews

Catfood Earth uses satellite imagery and data feeds to create live wallpaper for Windows and Android. Earth shows you the current extent of day and night combined with global cloud cover (clouds updated every hour). You can also choose to display time zones, places, earthquakes, volcanoes and weather radar. The Windows version includes a screen saver. Catfood Earth was first released in 2003. Version 4 was fully remastered to support 4K resolution on both platforms.

Download Catfood Earth

Catfood Earth Themes

Catfood Earth can be quickly configured with three different themes. After installing, run Catfood Earth Settings and click one of the buttons to activate a theme. If you want to customize further then visit the layers and advanced tabs of the settings app, described in detail below. The themes are:

Natural Theme

Natural is the default theme. This combines day, night and cloud cover. The day image uses NASA's blue marble next generation monthly global composite. combined daily so you can see changes in snow, ice and even vegetation throughout the year. Next, global cloud cover is blended on top of the day image (updated hourly). Finally Catfood Earth computes the extent of day and night and blends in NASA's city lights image. You can update the image as frequently as every minute and watch the terminator between day and night move across the planet and change shape with the passing seasons. The video below shows how all three components of the natural theme change over the course of a year:

Time Zones Theme

The time zones theme shows the current time zone in each country and optionally international zones as well. This theme is highly configurable, you can choose to show borders, pick colors, show hours or hours and minutes and control transparency. Catfood Earth can also show the local time for anywhere on Earth, see the places layer for more details. The video below shows how the time zones change by country from May 2021 to June 2022:

Earthquakes Theme

The final theme, earthquakes, uses a different daytime map with a more geological look and adds earthquakes for the past 24 hours. Size is proportional to magnitude and the quakes fade out over 24 hours so the most recent are highly visible. Again it's possible to customize extensively via layers. You can show active volcanoes and control the colors used, transparency and which magnitudes to plot. The video below shows a month of earthquakes as seen in Catfood Earth:

Catfood Earth Layers

The layers tab is where you can fully customize Catfood Earth. Use the checkboxes to activate layers and then click each layer to access detailed settings. Layers are listed in the order that they are drawn (i.e. clouds are drawn on top of the day map, and then night is drawn on top of the clouds and so on).

Day Map

The first layer is the daytime map. Catfood Earth ships with two defaults. The first uses NASA's blue marble 2 monthly images, merged with a more attractive ocean image. Catfood Earth interpolates these images daily so the extent of snow/ice and vegetation will change in a subtle way throughout the year. The other default is a less colorful map that I feel works well with earthquakes and volcanoes. You can also browse to and select a different image if you don't like the defaults.

All the images and data layers in Catfood Earth use an equirectangular projection so if you are using custom images you should make sure that they use the expected projection.

Clouds

Clouds come from the Space Science and Engineering Center at the University of Wisconsin-Madison. These images are web mercator by default, my website downloads the global composite every hour and transforms the image to equirectangular for Catfood Earth. If you have a different source for clouds you can enter a custom URL. You can also set the color and transparency of the clouds layer. The defaults are designed to make the clouds fairly subtle.

Night Map

The last natural layer is the nighttime map. Catfood Earth ships with NASA's 2016 update to city lights. This layer is drawn on top of daytime and clouds where it is currently nighttime (updated as often as every minute, see advanced options below). You can set the transparency of the layer and also the width used to blend the terminator between day and night (in degrees). It's also possible to select a different nighttime image if you prefer.

Time Zones

The time zones layer is based on the IANA time zone database. You can change the colors used to show the time zones and control the transparency of national and international zones. You can also choose if minutes are displayed with the time zone legends at the top of the screen. This is a good layer to use in combination with the Places layer and the Political Borders layer (both described below).

Political Borders

This layer displays political borders in a configurable color.

Places

The places layer shows a list of places optionally combined with the local time for each place. I've used this to show office locations around the world (handy to know if it's a good time to call someone) and also to track my geographically dispersed family. Catfood Earth ships with a default list of major cities. You can add to this, or remove everything and start from scratch. You can even export and import the list to make it easy to share between different devices. For each place you just need to provide the latitude, longitude and time zone (from the same source as the time zones layer).

Earthquakes

Earthquake data is downloaded from the USGS feed and can show global quakes from magnitude 2.5 up. There is a lot you can fine tune for this layer - The fill and accent colors, number of past hours to show (up to 24), the transparency range (older earthquakes are more transparent) and the minimum magnitude to plot. You can also choose whether to show descriptions or not and the order in which to plot the quakes (time based, or size based which makes it easier to see what's going on when a lot of quakes hit a small area).

Volcanoes

Volcano data comes from the Smithsonian Institution's Global Volcanism Program. This shows currently active volcanoes around the world. You can set the fill and accent colors, the transparency to use and whether to show descriptions or not.

Weather Radar

The final layer shows weather radar from the National Weather Service. This layer is US only. Enter a list of one or more radar stations to display, separated by commas. You can find your local station(s) at the NWS web site.

Catfood Earth Advanced

The advanced tab of Catfood Earth Settings controls how the final image is displayed and also allows you to render sequences of images (this is how I made most of the videos above).

Set how often the image is updated in minutes, as frequently as every minute which is handy if you're displaying the local time for places. You can also skip the first update when Catfood Earth loads (potentially useful at boot time when Windows is starting a lot of programs).

There are some settings relating to text display: a global font size and an option to use drop shadows.

Earth can be centered to a specific longitude (default 0) or to a specific time. If you choose a time then the image will rotate throughout the day to keep that local time at the center of the screen.

It is also possible to set a specific output size and location for the wallpaper. The default is to fill the screen.

Click Render Images to output a sequence of images. If you use a proxy server click Proxy Settings to configure.

Finally there are some troubleshooting options that you might be asked to use if you need help with the product.

Render Images

Render Images allows you to create frames from Catfood Earth based on current settings. This is useful for making animations based on how the Earth image changes over time. Set a start date/time (UTC), how to increment time between frames, the number of frames to generate, the size and an output folder. Earth will then create a sequence of JPEGs. This works well with computed layers like day/night and time zones. It will not work well with live data like clouds and earthquakes. I have made videos from live data as well, but this involves storing many images and/or data points and is not currently supported in Catfood Earth.

Catfood Earth for Android

Catfood Earth is a little different on Android. Because phones are mostly used in a portrait orientation the wallpaper shows the full range of latitude but only a segment of longitude depending on the screen size of the device. The wallpaper is the same as the natural theme in Catfood Earth for Windows (blue marble 2 day map, clouds, city lights night map) with the optional addition of earthquakes and volcanoes.

Run Catfood Earth and click Settings to configure. The slice of Earth displayed is based on a central longitude. By default this will update to your phone's current location. You can also set a random or manual location. -90 degrees works well to center North America. If using the current location you can choose to draw a small dot on the map to show where you are. In addition to the central longitude you can opt to show recent earthquakes, volcanoes, control cloud and night transparency and the width of the terminator between day and night. There are advanced options to ignore screen size changes and reuse the most recent image, and to paint black under the menu bar which is useful on some devices.

After configuring Catood Earth just select it as your current wallpaper. You can do this from device settings or tap the Set Wallpaper button in the Catfood Earth app.

Catfood Earth for Android is optimized for battery life. It will update around every ten minutes and so it might take that long to see any changes to settings. Clouds are downloaded every hour. If using your phone location it accesses the last location fix established by other apps.

Installation and Support for Catfood Earth

Catfood Earth for Windows requires version 4.8 of the .NET Framework. You almost certainly have this already and the installer will download if necessary. The installer for Catfood Earth is digitally signed. You may get a warning about it being infrequently used which you will need to ignore to install.

For support please visit this post, check to see if your issue has already been addressed and if not leave a new comment.

Customer Reviews

I was looking for a ‘live’ time zone clock for my desktop. Catfood Earth offers by far the best time zone tool around and a whole lot more. Beautiful, functional and thoughtfully designed, it brings the world alive. Martin Pratt

While Catfood Earth is a ‘fun’ product, it has been indispensable to me and our global business from a professional standpoint. It lets me know when I can communicate with clients around the globe and the weather I might be headed into on client visits. All the features are outstanding and there is no product available in its class. Joe D. Clayton

Thanks for such a great piece of software! It is so rare to find such a well-thought product, and then still with customer service that even surpasses it! Already well worth the cost — and all the unexpected features to boot! Thanks!! Hilton Kaplan

This is the best application of earth real live images for desktop I've experienced! Julie Branch

Updates

• Catfood Earth for Android 4.40
• Catfood Earth 4.40
• Catfood Earth for Android 4.30
• Catfood Earth 4.30
• Catfood Earth for Android 4.20
• Catfood Earth 4.20
• Catfood Earth 4.10
• Catfood Earth 4.01
• Catfood Earth for Android 4.00
• Catfood Earth 4.00
• Catfood Earth 3.46
• Catfood Earth 3.45
• Catfood Earth 3.44
• Catfood Earth 3.43
• Catfood Earth 3.42
• Catfood Earth 3.41
• Catfood Earth 3.40
• Volcanoes Back (Catfood Earth 3.30)
• Catfood Earth for Android 1.40
• Catfood Earth 3.20
• Catfood Earth for Android 1.20
• Catfood: Earth for Android 1.10
• Catfood: Earth for Android

Catfood Earth for Android 4.40

Catfood Earth for Android 4.40 is now available on Google Play.

Earth has an updated look and feel and two new features.

The volcanoes layer has been ported over from the Windows version of Catfood Earth. When enabled this will show volcanoes that have recent activity (within the past week) using data from the Smithsonian Institution's Global Volcanism Program.

It's now possible to show your current location on the map. I'm not sure it's a replacement for Google Maps just yet but it does help you find where you are on the satellite image.

The release was prompted by Google requiring API level 34 support... completing this for Fortune Cookies was a nightmare but having learnt from that experience Earth made the jump to MAUI pretty smoothly.

If you already use Earth for Android you should get the new version shortly. If not, this is what Android live wallpaper was made for so give it a try!

Catfood Earth 4.40

Catfood Earth 4.40 is now available to download.

With this release Catfood Earth is 20 years old! This update includes version 2023c of the Time Zone Database and the following bug fixes.

The National Weather Service changed one letter in the URL of their one hour precipitation weather radar product. It needs to be BOHA instead of BOHP. Presumably just checking that data consumers are paying attention? Weather radar is working again.

Not to be left out the Smithsonian Institution Global Vulcanism Program has decided to drop the www from their web site. The convention here is to redirect but they're content with just being unavailable at the former address. Recent volcanoes are working again as well.

The final fix is to the locations layer. Editing a location was crashing. This was due to a new format in the zoneinfo database that was not contemplated by the library that I use. As far as I can tell this isn't maintained any more since the death of CodePlex. While working on this update I started using GitHub Copilot, their AI assistant based on GPT 3.5. I was amazed at how helpful it was figuring out and then fixing this rather fiddly bug. The locations layer is back to normal, and I have regenerated all the time zone mapping as well.

Catfood Earth for Android 4.30

Catfood Earth for Android now supports random locations. The slice of Earth displayed will change periodically throughout the day. You can still set a manual location or have Catfood Earth use your current location. Install from Google Play, existing users will get this update over the next few days.

Catfood Earth 4.30

Catfood Earth 4.30 is available to download.

This update fixes a couple of problems with the screensaver. It now has improved support for multiple monitors (the image will repeat rather than stretch). There was a problem with the screensaver not starting in some cases. This should now be fixed. After upgrading to 4.30 please find and run the 'Catfood Earth Screensaver Settings' shortcut to configure the screensaver.

4.30 also includes version 2022d of the time zone database.

Catfood Earth for Android 4.20

Catfood Earth for Android 4.20 adds support for Material You, the custom color scheme introduced in Android 12. By default every wallpaper update will also subtly change your system color palette. You can override this from settings -> Wallpaper & style and switch back to basic colors if you don't like the Catfood Earth colors. This update was surprisingly painful. You can install Catfood Earth from Google Play, or for existing users it will automatically update in the next day or so.

Catfood Earth 4.20

Catfood Earth 4.20 is available to download.

This update includes the 2021d time zone database.

After procrastinating for far too long I have also migrated to .net 4.8 and renewed my code signing certificate. You'll get at least one less warning when installing and you no longer need to enable .net 3.5 on Windows 10 which was a pain. This shouldn't make any difference but please let me know if you have any trouble installing or running this version.

Catfood Earth 4.10

Catfood Earth 4.10 is available for download.

The National Weather Service updated their weather radar API. The weather radar layer has changed a bit, you can enter one or more (comma separated) weather station IDs and Earth will show one hour precipitation for all of them. You used to be limited to a single station but with more options for the rader layer to display. Let me know if you love or hate the new version.

4.10 also includes the latest 2021a time zone database.

(I'm sure there are great reasons for it, but the 'new' NWS API is an XML document per station that links to a HTML folder listing of images where you can enjoy parsing out the latest only to download a TINY GZIPPED TIFF file FFS).

Catfood Earth 4.01

Catfood Earth 4.01 is available for download.

The timezone database has been updated to 2020a. There is also a small fix to a problem with screensaver installation on recent versions of Windows 10.

Catfood Earth for Android 4.00

Catfood Earth for Android 4.00 is available for download and is updating through the Google Play Store.

As with the 4.00 update for Windows all images have been remastered to 4K resolution. Earth for Android has also been updated to better support Android 10 (updates are faster and the settings layout looks much better). You'll need to grant location permission in settings to have Earth automatically center on your current location. It's also possible to set a center longitude manually (I find -90 works well for centering most of the Americas).

Catfood Earth 4.00

Catfood Earth 4.00 is available for download.

The main change is that all of the images shipped with Catfood Earth have been remastered to 4K resolution. This includes NASA Blue Marble 2 monthly images (which Catfood Earth interpolates daily) and the 2016 version of Black Marble (city lights at night). The Catfood Earth clouds service has been updated to full 4K resolution as well.

Earth 4.00 also includes an update to the 2019c version of the Time Zone Database.

As well as providing desktop wallpaper and a screensaver, Catfood Earth can render frames for any time and date. To celebrate the release of 4.00 I created the 4K video below which shows all of 2019, 45 minutes per frame, 9,855 frames. You'll see the shape of the terminator change over the course of the year (I always post the seasonal changes here: Spring Equinox, Summer Solstice, Autumnal Equinox, and Winter Solstice). If you watch closely you'll also see changes in snow and ice cover and even vegetation over the course of the year.

Catfood Earth 3.46

Catfood Earth 3.46 is now available for download. Catfood Earth for Android 1.70 is available in the Google Play Store and will update automatically if you already have it installed.

This follows hot on the heels of the last release as the new clouds layer service running on this blog can update far more frequently than the source used prior to 3.45. You will now get a fresh helping of clouds every hour! Unrelated to this release I've improved the quality of the clouds image as well. If you're interested you can read about this in exhaustive detail here.

Catfood Earth 3.45

Catfood Earth 3.45 is now available to download. Catfood Earth for Android 1.60 is available on Google Play and will update automatically if you have it installed.

I only just released 3.44 with some timezone updates but in the past week the location I had been using for global cloud cover abruptly shut down. If you like up to date clouds you'll want to install the new versions as soon as possible. With this update I'm building a cloud image every three hours and serving through this blog (and thankfully CloudFlare) so any further changes should not require a code release.

Catfood Earth 3.44

Catfood Earth 3.44 is now available to download.

The timezone database has been updated to 2018i.

Eric Muller's shapefile map of timezones is no longer maintained and so Catfood Earth has switched to Evan Siroky's timezone boundary builder version.

A bug that could cause all volcanoes to be plotted at 0,0 depending on your system locale has been fixed.

Download Catfood Earth.

(Previously)

Catfood Earth 3.43

Catfood Earth 3.43 updates the timezone database to 2018e. The big change is that North Korea is moving back to UTC +09 today (May 5, 2018). The time zones layer in Catfood Earth shows the current time in each zone at the top of your screen and color codes each country and region. You can also display a list of specific places (either an included list of major cities or your own custom locations).

Catfood Earth is dynamic desktop wallpaper for Windows that includes day and night time satellite imagery, the terminator between daytime and nighttime, global cloud cover, time zones, political borders, places, earthquakes, volcanoes and weather radar. You can choose which layers to display an how often the wallpaper updates.

Download Catfood Earth.

(Previously, Previously)

Catfood Earth 3.42

Catfood Earth 3.42 is a small update to the latest (2016d) timezone database and the latest timezone world and countries maps from Eric Muller. If you use the political borders, places or time zones layers in Catfood Earth then you'll want to install this version.

Download the latest Catfood Earth.

(Previously)

Catfood Earth 3.41

Catfood Earth 3.41 fixes a problem that was preventing the weather radar layer from loading.

I've also updated to the latest (2015g) time zone database and the latest time zone map from Eric Muller.

Download the latest Catfood Earth.

(Previously)

Catfood Earth 3.40

I've just released Catfood Earth 3.40 for Windows and 1.50 for Android.

Both updates fix a problem with the clouds layer not updating. The Android update also adds compatibility for Android 5 / Lollipop.

Also, Catfood Earth for Android is now free. I had been charging $0.99 for the Android version but I've reached the conclusion that I'm never going to retire based on this (or even buy more than a couple of beers) so it's not worth the hassle. Catfood Earth for Windows has been free since 3.20.

Enjoy!

Volcanoes Back (Catfood Earth 3.30)

Catfood Earth fans will want to download Catfood Earth 3.30. This update fixes a problem where volcanoes were all plotted in the middle of the screen.

Catfood Earth for Android 1.40

Catfood Earth for Android now includes the option to display earthquakes (magnitude 5.0 or higher) from the USGS feed.

Catfood Earth 3.20

Catfood Earth 3.20 for Windows is now available for download. This update fixes a change in the feed address for the earthquakes layer. I've also switched to using the new NASA Black Marble night-time image and 3.20 includes the latest time zone and political border data.

Earth for Android has been updated to 1.30. This includes the new Black Marble image.

Catfood Earth for Android 1.20

I recently upgraded to the HTC One which has a transparent notification bar. This makes it hard to see notification icons when using Catfood Earth as your wallpaper, at least in the summer when it's always light at high latitudes and your white icons are displayed on top of polar ice and clouds.

Catfood Earth for Android 1.20 fixes this with an option to paint black under the notification bar. That's the only update other than the latest Xamarin runtime.

Catfood: Earth for Android 1.10

I’ve just released Catfood Earth for Android 1.10. You can control the center of the screen manually (the most requested new feature) and also tweak the transparency of each layer and the width of the terminator between day and night. It also starts a lot faster and has fewer update glitches. Grab it from Google Play if this looks like your sort of live wallpaper.

Catfood: Earth for Android

I’ve just released Catfood Earth for Android. It’s my second app created with Xamarin’s excellent toolkit. Being able to develop in C# allowed me to reuse a lot of code from the Windows version of Catfood Earth. The Android version doesn’t include all the same layers (yet) but it’s got the main ones – daytime (twelve different satellite images included, based on NASA’s Blue Marble Next Generation but with some special processing to make them look better), nighttime (city lights, shaded to show nighttime and the terminator between day and night) and a clouds layer that is downloaded every three hours.

My main worry had been that this would suck the phone battery dry, but after a fair amount of optimization it doesn’t even register on the battery consumption list. Grab it now from Google Play ($3.99, Android 2.2 or better).

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• Improving the accuracy of the new Catfood Earth clouds layer
• Catfood WebCamSaver
• Catfood Software Support
• Animation of a year of Global Cloud Cover
• ESRI Shapefile Reader in .NET

(All Code Posts)

(Published to the Fediverse as: Catfood Earth #code #earth #catfood #android #c# #xamarin #monodroid #volcanoes #software #windows #weather #radar #timezone #clouds #video #screensaver #maui Live wallpaper for Windows and Android that combines Blue Marble 2 NASA satellite imagery with live feeds of clouds, earthquakes, volcanoes and more. )

It's springtime in the northern hemisphere or autumn if you happen to live south of the equator. Rendered in Catfood Earth.

(Previously: Vernal (Spring) Equinox 2020)

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• Vernal (Spring) Equinox 2018
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• Vernal Equinox 2014

(All Code Posts)

(Published to the Fediverse as: Vernal (Spring) Equinox 2021 #code #earth #equinox #spring #autumn #vernal The exact instant of 2021's Vernal (Spring/Autumn) Equinox, rendered in Catfood Earth. )

TensorFlow Hub has a great sample for transferring the style of one image to another. You might have seen Munch's The Scream applied to a turtle, or Hokusai's The Great Wave off Kanagawa to the Golden Gate Bridge. It's fun to play with and I wondered how it would work for a timelapse video. I just posted my first attempt, four different shots of San Francisco and I think it turned out pretty well.

The four sequences were all shot on an A7C, one second exposure, ND3 filter and aperture/ISO as needed to hit one thousandth of a second before fitting the filter. Here's an example shot:

I didn't want The Scream or The Wave, so I asked my kids to pick two random pieces of art each so I could have a different style for each sequence:

The style transfer network wants a 256x256 style image so I cropped and resized the art as needed.

The sample code pulls images from URLs. I modified it to connect to Google Drive, iterate through a source folder of images and write the transformed images to a different folder. I'm running this in Google Colab which has the advantage that you get to use Google's GPUs and the disadvantage that it will disconnect, timeout, run out of memory etc. To work around this the modified code can be run as many times as needed to get through all the files and will only process input images that don't already exist in the output folder. Here's a gist of my adapted colab notebook:

One final problem is that the style transfer example produces square output images. I just set the output to 1920x1920 and then cropped a HD frame out the middle of each image to get around this.

Here's a more detailed workflow for the project:

I usually shoot timelapse with a neutral density filter to get some nice motion blur. When I shot this sequence it was the first time I'd used my filter on a new camera/lens and screwing in the filter threw off the focus enough to ruin the shots. Lesson learned - on this camera I need to nail the focus after attaching the filter. As I've been meaning to try style transfer for timelapse I decided to use this slightly bad sequence as the input. Generally for timelapse I shoot manual / manual focus, fairly wide aperture and ISO 100 unless I need to bump this up a bit to get to a 1 second exposure with the filter.

After shooting I use LRTimelapse and Lightroom 6 to edit the RAW photos. LRTimelapse reduces flicker and works well for applying a pan and/or zoom during processing as well. For this project I edited before applying the style transfer. The style transfer network preserves detail very well and then goes crazy in areas like the sky. Rather than zooming into those artifacts I wanted to keep them constant which I think gives a greater sense of depth as you zoom in or out.

Once the sequence is exported from Lightroom I cancel out of the LRTimelapse render window and switch to Google Colab. Copy the rendered sequence to the input folder and the desired style image and then run the notebook to process. If it misbehaves then Runtime -> Restart and run all is your friend.

To get to video I use ffmpeg to render each sequence. For this project at 24 frames per second and cropping a 1920x1080 frame from each of the 1920x1920 style transfer images.

Then DaVinci Resolve to edit the sequences together. I added a 2 second cross dissolve between each sequence and a small fade at the very beginning and end.

Finally, music. I use Filmstro Pro and for this video I used the track Durian.

Here's the result:

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(Published to the Fediverse as: Style Transfer for Time Lapse Photography #code #ml #tensorflow #drive #python #video How to apply the TensorFlow Hub style transfer to every frame in a timelapse video using Python and Google Drive. )

Winter starts now in the Northern Hemisphere, Summer to the south. 10:03 UTC Dec 21 2020 rendered in Catfood Earth.

(Previously: Winter Solstice 2019)

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(Published to the Fediverse as: Winter Solstice 2020 #code #winter #solstice #catfood #earth The exact moment of Winter Solstice 2020 rendered in Catfood Earth, including clouds and the extent of day and night around the Earth. )

Autumn starts now (September 22, 13:31 UTC) north of the Equator, Spring to the south. Rendered in Catfood Earth.

(Previously: Autumnal Equinox 2019)

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• Autumnal Equinox 2021
• Autumnal Equinox 2019
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• Autumnal Equinox 2013

(All Code Posts)

(Published to the Fediverse as: Autumnal Equinox 2020 #code #catfood #earth #equinox #autumnal The exact moment of Autumnal Equinox 2020 as rendered in Catfood Earth. )