"Sun, 21 Jul 2024 03:00:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
03:00:03
General datetime
2024-07-21 03:00:03Z
For Database
2024-07-21 03:00:03
For HTTP1.1
Sun, 21 Jul 2024 03:00:03 GMT