"Sun, 21 Jul 2024 10:15:50"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
10:15:50
General datetime
2024-07-21 10:15:50Z
For Database
2024-07-21 10:15:50
For HTTP1.1
Sun, 21 Jul 2024 10:15:50 GMT