"Sun, 21 Jul 2024 16:34:00"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
16:34:00
General datetime
2024-07-21 16:34:00Z
For Database
2024-07-21 16:34:00
For HTTP1.1
Sun, 21 Jul 2024 16:34:00 GMT