"Sun, 15 Sep 2024 02:18:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
02:18:36
General datetime
2024-09-15 02:18:36Z
For Database
2024-09-15 02:18:36
For HTTP1.1
Sun, 15 Sep 2024 02:18:36 GMT