"Tue, 21 May 2024 18:42:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
18:42:52
General datetime
2024-05-21 18:42:52Z
For Database
2024-05-21 18:42:52
For HTTP1.1
Tue, 21 May 2024 18:42:52 GMT