"Sun, 15 Sep 2024 18:54:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
18:54:57
General datetime
2024-09-15 18:54:57Z
For Database
2024-09-15 18:54:57
For HTTP1.1
Sun, 15 Sep 2024 18:54:57 GMT