World Time Zones

Convert between local time and UTC. Get local time in various places in the world.

Description

This application is based on a large table of places (cities, states, provinces,states) and their time zones. The methods are:
  t = timeZones() construct time converter object
  tz = t.zone(place) find a time zone (-11 to +12)
  tm = t.st2utc(time, place) convert local standard time to UTC
  tm = t.dst2utc(time, place) convert local daylight time to UTC
  tm = t.utc2st(time, place) convert utc to local standard time
  tm = t.utc2dst(time, place) convert utc to local daylight time
  t.places() all places for which time is tabulated

• MATLAB release: MATLAB 7.7 (R2008b)

[Arvind Ananthan]

This is a pretty useful class for doing all sorts of UTC time computations.

[Arvind Ananthan]

The constructor errors out in R2009b release!
??? Undefined function or method 'ctranspose' for input arguments of type 'function_handle'.
Error in ==> timeZones>public at 601
    o = struct(...
Error in ==> timeZones at 490
  tobj = public(); % prepare public interface
 

[Patrick Leung]

This is very useful. However, how would one incorporate daylight saving? Is there a daylight saving library somewhere?

[Bill McKeeman]

Patrick, I considered DST, and implemented entries in case the use knew DST was in effect. Tabulating DST, even for the U.S., required knowing geographical boundaries for the surprisingly varied laws regulating time. Such an effort was well beyond my own needs, and probably more work than payoff except for customers like AMTRAK. I would be interested in someone else trying it, but not me.

[Erwin Mayer]

Hello,

I have written a timezone converter that takes into account DST.
Check it out here: http://www.mathworks.com/matlabcentral/fileexchange/27953

It makes use of the Calendar Class in Java.

[Tanyer Alan]

 

[David]

Re: Erwin Mayer's contribution

But requires the Financial Toolbox