calendar event 3 hour difference on different devices

I own a few apple products as iPhone, iPad and a macbook. And I use preinstalled calendar a lot. However , for some reason all events are displayed on iPad In the setting for all of them 3 hours before they supposed to with a note GMT+3. I am in the moscow timezone so it is GMT+3. I cannot figure out what makes the events shift for 3 hours on my iPad. Has anyone faced this problem before?