Time Map

 

Editorial review

There is a great map on Wikipedia by TimeZonesBoy with time zone boundaries. I have taken that map and put it in my application and then displayed the correct time on every zone. Some countries use Daylight saving time so I displayed the time on boundaries of DST. The problem was that Android uses an old time zone database. I used Joda time to correct that problem. It uses the Olson database that is frequently updated. Startup is a little slower, but the displayed time is correct now.