"Sun, 21 Jul 2024 15:21:22"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
15:21:22
General datetime
2024-07-21 15:21:22Z
For Database
2024-07-21 15:21:22
For HTTP1.1
Sun, 21 Jul 2024 15:21:22 GMT