A chart showing the positions of the sun, moon and planets around planet earth (in the middle, with the line as the horizon) as well as the north and south nodes of the moon on the elliptic as seen from Tokyo at time of writing. It still needs a bit more work - I ran out of time to finish the animations and some of the graphical aspects. But it works fine for my purposes which is what matters most. It's written in Javascript and runs in my browser.
https://media.mstdn.social/media_attachments/files/109/618/987/812/799/391/original/27f86dbcd14ec23b.png