"Sun, 19 May 2024 23:18:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240519
Only TIME
23:18:45
General datetime
2024-05-19 23:18:45Z
For Database
2024-05-19 23:18:45
For HTTP1.1
Sun, 19 May 2024 23:18:45 GMT