"Sat, 20 Apr 2024 12:35:10"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240420
Only TIME
12:35:10
General datetime
2024-04-20 12:35:10Z
For Database
2024-04-20 12:35:10
For HTTP1.1
Sat, 20 Apr 2024 12:35:10 GMT