"Sat, 20 Jul 2024 12:20:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240720
Only TIME
12:20:15
General datetime
2024-07-20 12:20:15Z
For Database
2024-07-20 12:20:15
For HTTP1.1
Sat, 20 Jul 2024 12:20:15 GMT