"Sun, 15 Sep 2024 23:49:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
23:49:23
General datetime
2024-09-15 23:49:23Z
For Database
2024-09-15 23:49:23
For HTTP1.1
Sun, 15 Sep 2024 23:49:23 GMT