https://www.encrypter.site/

I've updated Encrypter.site with a new Time Capsule feature. It lets you "seal" a message that is mathematically impossible to open until a specific date and time you choose.

It's built on top of the Drand network, ensuring that there is no central authority holding the keys. No sign-up required, zero server-side storage of your data.

Try it out and let me know what you think.