"Tue, 21 May 2024 13:31:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
13:31:39
General datetime
2024-05-21 13:31:39Z
For Database
2024-05-21 13:31:39
For HTTP1.1
Tue, 21 May 2024 13:31:39 GMT