"Tue, 21 May 2024 20:20:05"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240521
Only TIME
20:20:05
General datetime
2024-05-21 20:20:05Z
For Database
2024-05-21 20:20:05
For HTTP1.1
Tue, 21 May 2024 20:20:05 GMT