"Sat, 21 Sep 2024 12:20:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
12:20:12
General datetime
2024-09-21 12:20:12Z
For Database
2024-09-21 12:20:12
For HTTP1.1
Sat, 21 Sep 2024 12:20:12 GMT