"Sun, 21 Jul 2024 21:06:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
21:06:40
General datetime
2024-07-21 21:06:40Z
For Database
2024-07-21 21:06:40
For HTTP1.1
Sun, 21 Jul 2024 21:06:40 GMT