"Sat, 20 Jul 2024 15:49:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240720
Only TIME
15:49:15
General datetime
2024-07-20 15:49:15Z
For Database
2024-07-20 15:49:15
For HTTP1.1
Sat, 20 Jul 2024 15:49:15 GMT