"Tue, 21 May 2024 14:10:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
14:10:23
General datetime
2024-05-21 14:10:23Z
For Database
2024-05-21 14:10:23
For HTTP1.1
Tue, 21 May 2024 14:10:23 GMT