In the local time of each, during what times of the 24-hour day in January, and in July, is it the same day of the week in Canberra and in Honolulu? Canberra goes on daylight savings time in summer but Honolulu does not. Standard time in Canberra is GMT plus 10 hours, whereas Honolulu time is GMT minus 10 hours.

What would the answer be if somehow (by magic, perhaps) Australia and Hawaii were to be moved so that standard time in Canberra was GMT plus 12 hours and time in Honolulu was GMT minus 12 hours?

How would the answers to the questions above be affected if the International Date Line were moved to the prime meridian instead of being (roughly) directly opposite as it now is?

(In reply to A Reference by Richard)

Richard, from the web page linked to in your post, it says, "A traveler going eastward across the Date Line from one island to another would not have to reset his watch because he would stay inside the time zone, but it would be the same time of the previous day."  This statement agrees with that time zones Mike and Yankee are the same time zone, yet are identified separately due to the International Date Line that divides the area(s).  Moving the IDL to the prime meridian would also then require the separation of the Zulu time zone into two.  One to mark the current day and the other to mark the previous day.  Perhaps you meant to use the IDL as an actual time zone border.  If so, you should express whether you were to move the IDL to the East or West of the Prime Meridian, and not the Prime Meridian itself.

Edited on July 13, 2006, 11:02 am

Posted by Dej Mar on 2006-07-13 08:18:51