"Thu, 27 Jun 2024 21:20:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240627
Only TIME
21:20:20
General datetime
2024-06-27 21:20:20Z
For Database
2024-06-27 21:20:20
For HTTP1.1
Thu, 27 Jun 2024 21:20:20 GMT