When I was a child, I observed that The Month of Ramadan was in the winter. As time passed, the circle changed. There is only 355 days in a year of Arabic Calendar. So, it is impossible to synchronize both calendars. And I observed most of the Ramadan in summer or approximately summer.
But i can see that the Ramadan will be observed again in the Winter after 7 years later. That means that I will be complete a cycle of changing calenders. :)