"Sun, 21 Jul 2024 16:30:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
16:30:31
General datetime
2024-07-21 16:30:31Z
For Database
2024-07-21 16:30:31
For HTTP1.1
Sun, 21 Jul 2024 16:30:31 GMT