Read the statement by Michael Teeuw here.
Calendar times in 24 hour format?
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 Any way to change calendar times to 24 hour? (as in the clock?) 
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 Change the timeFormat:in the config.js file in config folder so looks like this./* Magic Mirror Config * * By Michael Teeuw http://michaelteeuw.nl * MIT Licensed. */ var config = { port: 8080, language: 'en', timeFormat: 12, units: 'metric',Note: I Have only copied top half of mine. 
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 @jtyle6 Mine is already showing timeformat as 24, which shows the clock in 24 hour format. But calendar items are still showing 12 hour format with AM/PM 
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 @dinkybluebug245 said in Calendar times in 24 hour format?: @jtyle6 Mine is already showing timeformat as 24, which shows the clock in 24 hour format. But calendar items are still showing 12 hour format with AM/PM ah, whoops sorry miss read the Topic. 
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 Sorry for Dig this topic from grave but i have the same problem like @dinkybluebug245 
 I have meeting on 15:00 but calendar say its 03:00. Without PM
 I have in config timeFormat: 24.
 Everything work fine, only wrong time is show.
 And this is bug after update to last version.
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 Two things to try. Is your timeandtime zoneset correctly on your Pi itself?You could also try timeFormat: 24,in the module entry of the config.
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 timeFormat: 24, in calendar module not work. 
 How can i check is my time and timezone correctly set?
 Im from Poland so i set Europe/Warsaw time in raspi-config.
 My clock works correctly.When i change timeFormat to 12 calendar add PM to 03:00 so it’s correctly, but when i change to 24, PM disappear. 
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 @MrEdOne said in Calendar times in 24 hour format?: but when i change to 24, PM disappear. That makes perfect sense. 24 hour format would NOT show AM/PM, only 12 hour format would do that. 3:00 PM in 12 hour format 1500 in 24 hour format (no PM) 
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 Yes, but it won’t change 03:00 to 15:00 
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 Oh ok, that’s different It sounds like something is overriding the timeFormat: setting. Have you made any changes to the calendar.js file? 

