Change the Time Format to 12 or 24 Hour Format in Mac OS X

Edited by Grimm, Alexander Avdeev, Eng, Anonymous

You're watching VisiHow! In this tutorial, we will show you how you can change the time format from the 24-hour format to the standard AM or PM format and back again when using a Mac running OS X Yosemite.

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Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas124 273469.jpg

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Steps

  1. 1
    To get started, we are going to need to open the "Date & Time" panel.
    There are two ways to do that.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas20 675916.jpg
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  2. 2
    The first and the easiest way to open the date and time panel is to navigate to the clock and simply click it one time.
    When we click the clock, we will receive a menu, which will have the option to open the date and time preferences.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas27 150194.jpg
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  3. 3
    We click "Open Date & Time Preferences...".
    This will open the "Date & Timer" preferences menu. From there, we can change time quickly and easily.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas28 899422.jpg
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  4. 4
    We click "Use a 24-hour clock" under "Time options".
    We will see at the top that the AM or PM designation will disappear as the clock changes to the 24-hour format.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas45 892954.jpg
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  5. 5
    If we click "Use a 24-hour clock" again, we will have the "Show AM/PM" option.
    In this video, "AM" is shown.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas56 846944.jpg
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  6. 6
    We can uncheck "Show AM/PM" by clicking it.
    The clock will stay in the 12-hour format, but the "AM" or "PM" designation will not be shown.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas66 03569.jpg
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  7. 7
    Let's click "Use a 24-hour clock".
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas81 176418.jpg
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  8. 8
    We close the "Date & Time" window.
    We do that by moving the cursor to the red circle with the black "x" at the left side and clicking it one time.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas88 130662.jpg
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  9. 9
    The other method that we could use to access the time format function involves clicking the black apple icon on the top of the screen.
    We click "System Preferences..."
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas97 745567.jpg
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  10. 10
    Alternatively, we move the cursor to the dock at the bottom if the "System Preferences" are docked.
    We click "System Preferences". The reason that we might want to do this alternatively is that we might hide time from the top bar and not be able to click the time at the top bar to change the format.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas102 822591.jpg
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  11. 11
    Once we've opened "System Preferences", we move the cursor to the fifth icon in the fourth row and click it.
    The icon is "Date & Time" that refers us to date and time preferences. One click on the icon will open "Date & Time" menu, and we will have the same functionality that we would have by simply clicking the clock and selecting "Open Date & Time Preferences..."
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas119 602315.jpg
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  12. 12
    Let's close the "Date & Time" window by clicking the red circle with the black "x" at the left.
    Change the time format to or from AM PM or 24 Hour on Mac OS X Yosemite.mp4-canvas132 86002.jpg
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Thank you for choosing VisiHow! We do hope that this tutorial has been helpful for you. If you have any questions, comments, or suggestions, we would love to hear from you in the section below; and a member of our team will get back to you with answers and additional help.

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Video: Change the Time Format to 12 or 24 Hour Format in Mac OS X

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Article Info

Categories : Macintosh

Recent edits by: Eng, Alexander Avdeev, Grimm

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