"Sun, 15 Sep 2024 13:11:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
13:11:55
General datetime
2024-09-15 13:11:55Z
For Database
2024-09-15 13:11:55
For HTTP1.1
Sun, 15 Sep 2024 13:11:55 GMT