"Sat, 15 Jun 2024 22:18:27"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240615
Only TIME
22:18:27
General datetime
2024-06-15 22:18:27Z
For Database
2024-06-15 22:18:27
For HTTP1.1
Sat, 15 Jun 2024 22:18:27 GMT