"Sat, 29 Jun 2024 13:39:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240629
Only TIME
13:39:15
General datetime
2024-06-29 13:39:15Z
For Database
2024-06-29 13:39:15
For HTTP1.1
Sat, 29 Jun 2024 13:39:15 GMT