"Sun, 18 Feb 2024 22:17:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240218
Only TIME
22:17:12
General datetime
2024-02-18 22:17:12Z
For Database
2024-02-18 22:17:12
For HTTP1.1
Sun, 18 Feb 2024 22:17:12 GMT