"Tue, 21 May 2024 19:17:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
19:17:12
General datetime
2024-05-21 19:17:12Z
For Database
2024-05-21 19:17:12
For HTTP1.1
Tue, 21 May 2024 19:17:12 GMT