The clocks went forward this Sunday morning, with the return of daylight saving time. 

Daylight saving time was first tried in Germany in 1916, running from April 30 to October 1. 

British also took the model but then chose another period to implement it, May 21 - October 16. The first, however, to try this system but on a smaller scale, were the residents of the city of Thunder Bay in Canada in July 1908. 

The change of summer time creates the opportunity to enjoy more daylight and sunlight. As a law, the time change in Europe was established in 1981, being renewed every four years thereafter. However, this change seems to affect the human organism. 

Recently it has been discussed a lot for putting an end to clock changes. EU Commission and the European Parliament agree on this. But this still lacks the approval of all 28 countries of the bloc. Most of the world's countries do not recognize the time change, only 73 of them did this year. 

There are countries in which the time changes only in one part, for example in Canada or the USA. 69 countries have abolished the time change they had before. The EU has three time zones, from Portugal in the west to Cyprus in the east.