"Sat, 21 Sep 2024 04:15:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
04:15:17
General datetime
2024-09-21 04:15:17Z
For Database
2024-09-21 04:15:17
For HTTP1.1
Sat, 21 Sep 2024 04:15:17 GMT