"Sun, 15 Sep 2024 18:19:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
18:19:55
General datetime
2024-09-15 18:19:55Z
For Database
2024-09-15 18:19:55
For HTTP1.1
Sun, 15 Sep 2024 18:19:55 GMT