"Sat, 21 Sep 2024 02:38:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
02:38:36
General datetime
2024-09-21 02:38:36Z
For Database
2024-09-21 02:38:36
For HTTP1.1
Sat, 21 Sep 2024 02:38:36 GMT