Wondering if anyone knows of BB program that will add time.

i.e.:

3:45
+ 1:15
+ :07
-------
5:07

Along the same lines is there a program or applet that can quickly change among country timezones? Traveling worldwide for a living and having to manually change time zones via the options applet gets annoying......Right now I can view different timezones via PocketDay, but still have to manually change the BB clock in order to get alarms to work properly...