"Sun, 21 Jul 2024 04:45:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
04:45:19
General datetime
2024-07-21 04:45:19Z
For Database
2024-07-21 04:45:19
For HTTP1.1
Sun, 21 Jul 2024 04:45:19 GMT