"Fri, 21 Jun 2024 04:30:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
04:30:15
General datetime
2024-06-21 04:30:15Z
For Database
2024-06-21 04:30:15
For HTTP1.1
Fri, 21 Jun 2024 04:30:15 GMT