Ramadaan should always be in September.
First of all the Ramadaan should always be in September. Moving Ramadaan every year 10 days back doesn't make any sense.
Majority of the Islamic months are based on seasons.
For example Rabiul Awwal and Rabiul Sani means spring the first and spring the second. How can we have spring in winter or summer? These are the 3rd and the forth month of the Islamic calendar. So basically march and April as in gregorian calendar.
What we need is a luni solar calendar.
In March and September the days and the nights are approximately of same length all over the world. Its called the equinox.
The Ramadaan should start at the first lunar sight in the month of September.
I know lots of you will not agree with me but i am putting a rational and more logical scenario here.