"Sat, 21 Sep 2024 16:36:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
16:36:17
General datetime
2024-09-21 16:36:17Z
For Database
2024-09-21 16:36:17
For HTTP1.1
Sat, 21 Sep 2024 16:36:17 GMT