"Sun, 21 Jul 2024 20:43:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
20:43:21
General datetime
2024-07-21 20:43:21Z
For Database
2024-07-21 20:43:21
For HTTP1.1
Sun, 21 Jul 2024 20:43:21 GMT