"Sun, 15 Sep 2024 20:49:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
20:49:55
General datetime
2024-09-15 20:49:55Z
For Database
2024-09-15 20:49:55
For HTTP1.1
Sun, 15 Sep 2024 20:49:55 GMT