This is needed
Bleet IN THE PAST
THIS DOESN'T WORK ANY MORE but it was fun while it lasted

Bleet in the PAAAAST

For some reason, the Bluesky API allows you to specify the date and time of your posts, bringing into question the integrity of everything you see on the site

I created the tool below to exploit this for fun. Enjoy!

Enter your Bluesky handle (e.g., foxesarecool.bsky.social) Provide an app password for your account. NOT your Bluesky password!!
You can create an app password here
If you want this to be a reply to an existing post, put the URL here
What you want to post (max 300 characters). Choose what past date you want on your Bluesky post
Choosing a date in the future will just post with the current time