NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setYear:2000];
[comps setMonth:1];
[comps setDay:1];
[comps setHour:0];
[comps setMinute:0];
[comps setSecond:0];

NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *startDate = [cal dateFromComponents:comps];

[cal release];
[comps release];

[NSDate dateWithNaturalLanguageString:@"August 1st, 2005"];

NSDateFormatter *myFormatter = [[NSDateFormatter alloc] init];
[myFormatter setDateFormat:@"M/d/yy"];
NSDate *myDate = [myFormatter dateFromString:@"August/01/05"];

[NSDate dateWithTimeIntervalSince1970:1122854401];

NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:1];
[components setMonth:8];
[components setYear:2005];
NSCalendar *gregorian = [[NSCalendar alloc]
                         initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *date = [gregorian dateFromComponents:components];