NSDate, NSString conversion and get TimeZone

NSDateConverter.m

// Get TimeZone
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"Z"];
NSString *tz = [dateFormatter stringFromDate:[NSDate date]];
[dateFormatter release];

// Convert NSDate to NSString
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSString *strDate = [dateFormatter stringFromDate:[NSDate date]];
[dateFormatter release];

// Convert NSString to NSDate
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:@"2011-03-09 15:06:33"];
[dateFormatter release];