Is it not an inconvenience to begin the fasting period at different times during a year?
No, on the contrary the lunar calendar gives us a chance of fasting during different seasons of the year. Throughout a Muslim’s lifetime, Ramadan will fall both during winter and fall months, when the days are short, and spring and summer months, when the days are long and the fast is little more difficult. In this way, the difficulty of the fast is evenly distributed between Muslims living in the northern and southern hemispheres.