"Sun, 23 Jun 2024 21:21:50"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240623
Only TIME
21:21:50
General datetime
2024-06-23 21:21:50Z
For Database
2024-06-23 21:21:50
For HTTP1.1
Sun, 23 Jun 2024 21:21:50 GMT