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9. System Preferences > Date & Time

Date & Time

Your Mac’s conception of what time it is can be very important. Every file you create or save is stamped with this time, and every email you send or receive is marked with this time. As you might expect, setting your Mac’s clock is what the Date & Time pane is all about.

Date & Time Tab

Click the Date & Time tab. If your Mac is online, turn on “Set date & time automatically,” and be done with it. Your Mac sets its own clock by consulting a highly accurate scientific clock on the Internet. (No need to worry about Daylight Saving Time, either, as the time servers take that into account.)

Gem in the Rough: Your Free Time-Difference Calculator

You can use the Time Zone tab of Date & Time to calculate the exact time difference between any two points on earth. To do this, you must have the Time Zone pane open and your menu bar clock turned on and set to View as Digital (see the discussion of the menu bar clock in this chapter).


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