"Fri, 21 Jun 2024 04:40:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
04:40:52
General datetime
2024-06-21 04:40:52Z
For Database
2024-06-21 04:40:52
For HTTP1.1
Fri, 21 Jun 2024 04:40:52 GMT