"Sun, 21 Jul 2024 18:13:50"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
18:13:50
General datetime
2024-07-21 18:13:50Z
For Database
2024-07-21 18:13:50
For HTTP1.1
Sun, 21 Jul 2024 18:13:50 GMT