"Sun, 15 Sep 2024 17:38:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
17:38:39
General datetime
2024-09-15 17:38:39Z
For Database
2024-09-15 17:38:39
For HTTP1.1
Sun, 15 Sep 2024 17:38:39 GMT