"Sun, 15 Sep 2024 12:38:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
12:38:16
General datetime
2024-09-15 12:38:16Z
For Database
2024-09-15 12:38:16
For HTTP1.1
Sun, 15 Sep 2024 12:38:16 GMT