"Sat, 18 May 2024 20:00:01"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240518
Only TIME
20:00:01
General datetime
2024-05-18 20:00:01Z
For Database
2024-05-18 20:00:01
For HTTP1.1
Sat, 18 May 2024 20:00:01 GMT