"Sat, 27 Jul 2024 15:30:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240727
Only TIME
15:30:20
General datetime
2024-07-27 15:30:20Z
For Database
2024-07-27 15:30:20
For HTTP1.1
Sat, 27 Jul 2024 15:30:20 GMT