"Sun, 21 Jul 2024 07:37:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
07:37:18
General datetime
2024-07-21 07:37:18Z
For Database
2024-07-21 07:37:18
For HTTP1.1
Sun, 21 Jul 2024 07:37:18 GMT