In a minor update to the popular Gmail service, Google has integrated additional country holiday calendars into Google Calendar. Users of Gmail are now able to choose from over 30 different countries, not including the ones already available, and add the holidays for the additional countries within Google Calendar. The update also ensures that holidays further in the future are displayed, allowing users that rely on the calendar feature plenty of time to make adequate travel preparations. The additional country holiday calendars will roll out over the next couple of days to all Gmail users, according to Ronnie Falcon, an Associate Product Manager Intern at Google.
Source: Official Gmail Blog