"Sat, 21 Sep 2024 23:48:49"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
23:48:49
General datetime
2024-09-21 23:48:49Z
For Database
2024-09-21 23:48:49
For HTTP1.1
Sat, 21 Sep 2024 23:48:49 GMT