"Sun, 21 Jul 2024 19:05:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
19:05:39
General datetime
2024-07-21 19:05:39Z
For Database
2024-07-21 19:05:39
For HTTP1.1
Sun, 21 Jul 2024 19:05:39 GMT