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Why Were Your Timezone Definitions Updated?

The earth rotates 15 degrees in about 60 minutes and full rotation(360 degrees) in about 24 hours. This information divides the planet into 24 sections and time zones. The timezone is the geographical region that is used to monitor the uniform standard time for legal and commercial objectives. There are 24 time zones with a one-hour difference all over the world.

This blog will demonstrate all the details of “Timezone Definition Updated” and how to check or modify the “Timezone” on computers, mac ios, and smartphone devices.

Reason for Timezone Definition Updated

The Timezone DataBase is maintained by the IANA(Internet Assigned Number Authority). IANA generally revises the timezone which might be the reason for this popup message of “Timezone Definition Updated ” please restart the phone. The incorrect timezone might disturb the computers to perform certain functions, such as this may affect the scheduled task and the apps requiring the timezone information. 

The two main reasons for the timezone definition updated are stated below:

  • The timezone database changes the timezone in the reply of one or more governments changing their country’s timezone rules, such as the legislative modifications of “US Energy Policy of Act 2005” change the timezone in all the states of the US( united states) and Canada
  • The time zone also changes when the country changes its Daylight Saving Time(DST).

How to Check and Modify the Timezone?

To check and modify the timezone of the devices follow the below instructions:

Check or Modify Timezone for Windows 7, 8, 10:

  • In Windows 7, first, open the “start menu” and select the “control panel”.
  • Next, hit on “Clock, Language, and Region” option.
  • After that, go within “Date and Time” option.
  • Finally, click on the “timezone” option and select your country’s timezone.
  • In Windows 8, first, simply click on the “clock/time” located in the right-bottom corner of the taskbar.
  • Now we have to select “Change Date and Time Settings
  • After that, click on the “time zone” option and change the time. We can also use the feature of “Adjust the daylight saving time automatically”.
  • In Windows 10, search the “control panel” in the taskbar.
  • Next, simply select on the “clock and region”.
  • After that, hit on “Date and Time”..
  • Finally, set the “time zone” according to your country (DSL) and also enable the “set automatically” option.

Check or Modify Timezone for Windows XP:

  • In Windows XP, first, simply right-click the “clock” in the right corner of the taskbar.
  • Next, simply click on the “Adjust Date/ Time” option.
  • After that, click on the “timezone” and set the time according to your country (DSL).

Check or Modify Timezone for Mac ios:

  • First, click the “App Icon” on the desktop, and after clicking it will open the “System preferences”.
  • Next, click on the “Date & Time” option and then click on the “Timezone” tab.
  • Finally, enable the “set a timezone automatically” option. It will use your current location to adjust the time.

Check or Modify Timezone for Smartphone:

  • Simply, unlock the smartphone and then navigate to “Settings“.
  • Select the “Additional setting”.
  • Then, click/select “Date and Time”.
  • Finally, enable the “Set timezone automatically” option

In these days, devices are able to automatically update their dates and times, you just have to ensure that the option related to automatic timezone is enabled or not. If you are running an old device or operating system, then you might have to take care of it manually. 

We have explained why your timezone definitions are updated and In case, you are seeing some notification related to this then you can make it disappear by setting the timezone by following the above steps.


The timezone database is supported by the internet-assigned number authority. When the country changes its Daylight Saving time, the time zone will be changed. Due to the change in the time zone, the issue “Timezone Definition Updated “ please restart your phone might occur on devices, such as laptops, Macs iOS, and smartphones. To rectify this problem, we have to update the timezone of the devices. In this article, we have explained all the details of “timezone definition updated” and how to check and modify the timezone of the devices step by step

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