"Sun, 21 Jul 2024 18:54:30"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
18:54:30
General datetime
2024-07-21 18:54:30Z
For Database
2024-07-21 18:54:30
For HTTP1.1
Sun, 21 Jul 2024 18:54:30 GMT