Further to this, if you want to start getting your old Pixelfed posts, they also use Snowflake IDs, but have an epoch in Feburary 2019, so there's a slightly different way to calculate them: min_id = (int(datetime(2022,11,28,2,00).timestamp()) * 1000) - 1549756800000 << 22 max_id = (int(datetime(2022,11,28,2,59).timestamp()) * 1000) - 1549756800000 << 22 https://github.com/pixelfed/pixelfed/blob/dev/app/Services/SnowflakeService.php