"Fri, 21 Jun 2024 18:35:57"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
18:35:57
General datetime
2024-06-21 18:35:57Z
For Database
2024-06-21 18:35:57
For HTTP1.1
Fri, 21 Jun 2024 18:35:57 GMT