"Sun, 15 Sep 2024 14:31:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
14:31:19
General datetime
2024-09-15 14:31:19Z
For Database
2024-09-15 14:31:19
For HTTP1.1
Sun, 15 Sep 2024 14:31:19 GMT