"Tue, 21 May 2024 16:23:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
16:23:18
General datetime
2024-05-21 16:23:18Z
For Database
2024-05-21 16:23:18
For HTTP1.1
Tue, 21 May 2024 16:23:18 GMT