NSDate - few important things

If your program logic makes decisions based on time here are few things you need to remember.

• [NSDate date] will give you the GMT time and date. But this is calculated using the current device time. If the device time is wrong this value is also wrong.
• [[NSTimeZone systemTimeZone] name] will give the device time zone. e.g. Asia/Colombo
• [[NSTimeZone systemTimeZone]secondsFromGMT] will give the number of seconds from GMT. e.g. 19800
• If you want to get the device time use [NSDate dateWithTimeInterval:[[NSTimeZone systemTimeZone]secondsFromGMT] sinceDate:[NSDate date]]