"Sat, 21 Sep 2024 14:40:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
14:40:19
General datetime
2024-09-21 14:40:19Z
For Database
2024-09-21 14:40:19
For HTTP1.1
Sat, 21 Sep 2024 14:40:19 GMT