"Sun, 15 Sep 2024 15:56:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
15:56:40
General datetime
2024-09-15 15:56:40Z
For Database
2024-09-15 15:56:40
For HTTP1.1
Sun, 15 Sep 2024 15:56:40 GMT