"Sun, 15 Sep 2024 13:48:54"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
13:48:54
General datetime
2024-09-15 13:48:54Z
For Database
2024-09-15 13:48:54
For HTTP1.1
Sun, 15 Sep 2024 13:48:54 GMT