"Sun, 21 Jul 2024 13:18:59"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
13:18:59
General datetime
2024-07-21 13:18:59Z
For Database
2024-07-21 13:18:59
For HTTP1.1
Sun, 21 Jul 2024 13:18:59 GMT