"Sun, 21 Apr 2024 18:41:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240421
Only TIME
18:41:31
General datetime
2024-04-21 18:41:31Z
For Database
2024-04-21 18:41:31
For HTTP1.1
Sun, 21 Apr 2024 18:41:31 GMT