"Sat, 15 Jun 2024 04:06:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
04:06:18
General datetime
2024-06-15 04:06:18Z
For Database
2024-06-15 04:06:18
For HTTP1.1
Sat, 15 Jun 2024 04:06:18 GMT