"Sun, 28 Jul 2024 18:20:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240728
Only TIME
18:20:21
General datetime
2024-07-28 18:20:21Z
For Database
2024-07-28 18:20:21
For HTTP1.1
Sun, 28 Jul 2024 18:20:21 GMT