"Sun, 21 Jul 2024 02:12:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
02:12:40
General datetime
2024-07-21 02:12:40Z
For Database
2024-07-21 02:12:40
For HTTP1.1
Sun, 21 Jul 2024 02:12:40 GMT