"Tue, 21 May 2024 22:21:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
22:21:39
General datetime
2024-05-21 22:21:39Z
For Database
2024-05-21 22:21:39
For HTTP1.1
Tue, 21 May 2024 22:21:39 GMT