"Mon, 29 Apr 2024 04:40:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240429
Only TIME
04:40:21
General datetime
2024-04-29 04:40:21Z
For Database
2024-04-29 04:40:21
For HTTP1.1
Mon, 29 Apr 2024 04:40:21 GMT