"Tue, 21 May 2024 14:12:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
14:12:44
General datetime
2024-05-21 14:12:44Z
For Database
2024-05-21 14:12:44
For HTTP1.1
Tue, 21 May 2024 14:12:44 GMT