"Sun, 15 Sep 2024 14:38:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
14:38:36
General datetime
2024-09-15 14:38:36Z
For Database
2024-09-15 14:38:36
For HTTP1.1
Sun, 15 Sep 2024 14:38:36 GMT