"Sun, 23 Jun 2024 13:21:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
13:21:37
General datetime
2024-06-23 13:21:37Z
For Database
2024-06-23 13:21:37
For HTTP1.1
Sun, 23 Jun 2024 13:21:37 GMT