"Sun, 15 Sep 2024 20:20:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
20:20:16
General datetime
2024-09-15 20:20:16Z
For Database
2024-09-15 20:20:16
For HTTP1.1
Sun, 15 Sep 2024 20:20:16 GMT