These watches, and devices will soon need to be made (list)

The time change, the beginning of the “summer time” in 2021, is coming up soon. You against the clock or back? You may sleep longer and night is shorter? On which devices do I need to change the clocks and how to do that on the phone? For these questions, there is a quick answer.


In the night of 27. on the 28. March find the first of the two time changes in 2021 instead. Like every year, will also ushered in 2021 on the last Sunday in March to 2:00 PM (CET), the “summer time”. The clock is then presented. That is, it is in the night on Sunday one hour less of sleep. This hour is (expected to be) then on Sunday, the 31. October 2021, will be “returned” when the clock is then converted back to the “winter time” (the normal time standard time).

Time change – the end of the summer, time: date 2021

  • The time change from summer to Summer time 2021 in the night of Saturday, 27. March to Sunday, 28. March 2021.
  • Then the clock is 2 p.m., presented at the 3 o’clock.
  • When switching from the “winter time” in the “summer time” is the night in an hour shortened.

This graphic explains it very simply: When there is a change in the summer time the clock is introduced (yellow), at 31. October 2021 is then put back (blue):

Time Change: On 28. March 2021 will be presented (source: Statista)

Time conversion: list of all the watches and devices that need to be made

Here is an Overview of watches or technical devices with a built-in clock, which must be changed at the time of conversion may have to manually’s. You can open this article either on your phone, and all of the points for execution, or this check list as a PDF file, download here and print.

Living room

  • TV
  • Receiver
  • Blu-ray/DVD Player
  • Weather station
  • Wall clock


  • Oven
  • Microwave
  • Fully automatic coffee machine
  • Wall clock

Electronic Devices, Others

  • Watch / Pocket Watch
  • MP3 Player
  • Radio
  • Stereo
  • Answering machine
  • Home phone
  • Fax
  • Alarm clock
  • Digital camera
  • Camcorder
  • Fitness Tracker, Heart Rate Monitor
  • Medical devices (e.g. blood pressure measuring device)

House technology

  • Thermostat
  • Heating
  • Timer
  • Alarm system
  • Motion detector
  • Lighting (time-controlled systems)
  • Garden irrigation (time-controlled systems)


  • Car radio
  • Motorcycle (At)
  • Navigation systems
  • Bike computer
  • Fitness Tracker, Heart Rate Monitor

Time to switch to the phone and to the Computer

Smartphone and PC, users need to worry about the time change: In General, the digital watches from Android, iOS, and Windows in order to set themselves automatically, provided you have chosen the right setting.

Surveys: The German thinking about the time change

According to our GIGA-survey find around 80 percentthat the time change is rather pointless, unnecessary, or even stressful for the health. Only 20 % see benefits in the transition. Many complain of restlessness and sleep problems, irritable, after the time change even. Even with Statista, a similar image on the (Un-)sense of time change as a result. What do you think about that?

What do you think of the time change?

Question 1 1

What do you think of the time change?

ZDF Politbarometer, in a survey the following question: “If the time change is abolished, you wish year-round summer time or all year round winter time?” The responses show that the majority of respondents for the permanent retention of the daylight saving time should be the time change abolished.

The graph shows the result of a March 2019 survey to the preference of the summer time or the winter time, if the time change is abolished. 52 percent of the respondents indicated that year-round summer time is in effect, if the time change is abolished (source: Statista / ZDF-Politbarometer of 28. March 2019)

Time change: What is it good for?

In the case of the colloquial “winter time” is in the proper sense of the “normal time”. In March, the clock is switched to Central European summer time, in order to save on energy costs. Nowadays, the time is criticized conversion in many places as unnecessary. Aim at the introduction of the time change was the bright light of day to make better use of energy costs, as well as resources for the production of artificial save the light. In addition, the extra hour in the dark to sleep better. Cause of the time change, in particular, the oil Crises of 1973 and 1979/1980 goods.

The Change of the time was for the first time during the First world war on 30. April 1916 in the German Empire, Austria-Hungary, and the United Kingdom carried out. As a result, the time period should be increased with usable light. After the end of the First world war, the first Phase of the time has been set changeover, however, to be in force. Only in 1975, most of the countries of the European community followed, and the summer resulted in time. In 1977, the plans were implemented. Also here is a better use of energy in the foreground. Since 1996, the clock is switched in the EU. Germany is one of over 60 countries, which is the clock, and reset. The time change is, however, often criticised as unreasonable felt. Many look at the time change won’t have the opportunity to save energy and time, view conversion as a historical Remnant.

EU: time conversion is to be abolished (actually)

According to a 2018 carried out EU-wide survey to the time change the abolition of the state at the time of the EU to the test. In fact, the EU, a majority in Parliament agreed to abolish the time change starting in 2021. Whether the appointment is kept, however, is uncertain. The member States of the EU have to decide for yourself whether you want to live in the event of the abolition of the time change permanently in the summer or winter time. According to the last information hapere it to the “collusion of the member countries”. Finally, it should be used to prevent a patchwork of different time zones in Europe.

When it is changed the clock? Spells to Remember, and front or back?

If your every half a year before the question is “when is switched to the clock?” there are a few Mnemonics and Merksprüche, with which you can remember, whether it’s one hour forward or backward:

  • In the summer, the watch is presented (both with “o”), in the Winter behind.
  • In the summer of cafes tables “in front of” the door. In the Winter, you put it back in the Store.
  • In the Winter there are Minus temperatures, so the clock is reset. In the summer, plus degrees in front of the time.
  • In the summer, you can take a step outside the car, because it is warmer. In the Winter, your going to take a step back into the home, since it is colder.