"Sat, 21 Sep 2024 15:51:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
15:51:12
General datetime
2024-09-21 15:51:12Z
For Database
2024-09-21 15:51:12
For HTTP1.1
Sat, 21 Sep 2024 15:51:12 GMT