"Sun, 15 Sep 2024 14:48:09"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
14:48:09
General datetime
2024-09-15 14:48:09Z
For Database
2024-09-15 14:48:09
For HTTP1.1
Sun, 15 Sep 2024 14:48:09 GMT