How to convert NSAppleEventDescriptor type 'ldt' to NSDate in Cocoa?

NSLog(@"%@",eventDescriptor); shows <NSAppleEventDescriptor: 'ldt '($90EFCFC700000000$)>

How do i convert this to NSD开发者_如何学Cate?

It's probably a LongDateTime value, so you'd extract the data as LongDateTime, then maybe pass it through UCConvertLongDateTimeToCFAbsoluteTime and then use +[NSDate dateWithTimeIntervalSinceReferenceDate:].