"Sun, 21 Jul 2024 15:23:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
15:23:48
General datetime
2024-07-21 15:23:48Z
For Database
2024-07-21 15:23:48
For HTTP1.1
Sun, 21 Jul 2024 15:23:48 GMT