If you will only fast few days of the 6 days of Shawal, this will not work.

you must fast the whole month of Ramadan and make up for the missed days and then fast the 6 days of Shawwal.

I have left 6 days to fast from Ramadan (qada), if I start fasting from tomorrow I will not have enough time to fast also the 6 days of Shawwal. If I will fast the last 2 or 3 days from Shawwal I will be rewarded?

Fasting | March 30, 2014 2:45 pm
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I was fasting as an expiation for breaking an oath. I wake up for fajr. After doing wudu, I realized that there is some more time left for azaan. So I decided to take a short slumber as I was quite tired. But I wake up after sunrise. I prayed the fajrimmediately after doing wudu again. Is my fasting for those days valid?
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In our country Bangladesh the Ramadan starts after one day of saudi arab and my friends are saying that Ramadan should start with same time in the whole ummah like since the people of arab saw the moon first as a one ummah we should start withthey say anywhere in the world if the moon is seen we should start fasting…….now im confused what should i do ??? should i start with our local people or with them???