"Sun, 15 Sep 2024 16:31:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
16:31:37
General datetime
2024-09-15 16:31:37Z
For Database
2024-09-15 16:31:37
For HTTP1.1
Sun, 15 Sep 2024 16:31:37 GMT