"Tue, 21 May 2024 07:40:44"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
07:40:44
General datetime
2024-05-21 07:40:44Z
For Database
2024-05-21 07:40:44
For HTTP1.1
Tue, 21 May 2024 07:40:44 GMT