"Sat, 27 Apr 2024 20:20:03"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240427
Only TIME
20:20:03
General datetime
2024-04-27 20:20:03Z
For Database
2024-04-27 20:20:03
For HTTP1.1
Sat, 27 Apr 2024 20:20:03 GMT