"Tue, 18 Jun 2024 22:15:21"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240618
Only TIME
22:15:21
General datetime
2024-06-18 22:15:21Z
For Database
2024-06-18 22:15:21
For HTTP1.1
Tue, 18 Jun 2024 22:15:21 GMT