"Sat, 13 Apr 2024 20:14:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240413
Only TIME
20:14:21
General datetime
2024-04-13 20:14:21Z
For Database
2024-04-13 20:14:21
For HTTP1.1
Sat, 13 Apr 2024 20:14:21 GMT