"Sat, 29 Jun 2024 21:35:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
21:35:39
General datetime
2024-06-29 21:35:39Z
For Database
2024-06-29 21:35:39
For HTTP1.1
Sat, 29 Jun 2024 21:35:39 GMT