"Sat, 21 Sep 2024 02:40:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
02:40:13
General datetime
2024-09-21 02:40:13Z
For Database
2024-09-21 02:40:13
For HTTP1.1
Sat, 21 Sep 2024 02:40:13 GMT