"Sun, 21 Jul 2024 16:18:55"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240721
Only TIME
16:18:55
General datetime
2024-07-21 16:18:55Z
For Database
2024-07-21 16:18:55
For HTTP1.1
Sun, 21 Jul 2024 16:18:55 GMT