"Sat, 29 Jun 2024 15:33:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
15:33:56
General datetime
2024-06-29 15:33:56Z
For Database
2024-06-29 15:33:56
For HTTP1.1
Sat, 29 Jun 2024 15:33:56 GMT