"Sun, 21 Jul 2024 18:42:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
18:42:33
General datetime
2024-07-21 18:42:33Z
For Database
2024-07-21 18:42:33
For HTTP1.1
Sun, 21 Jul 2024 18:42:33 GMT