Salaam.
I also happen to be one of those who are yet unclear between winter and summer Ramadan. I find arguments for winter fasting (those in TNR) more convincing relative to the summer fasting argument, but the other one has also some weight, especially as regards the lexical meaning of the word ... and this is very surprising also that there is this ambiguity about Ramadan here... I am also doubtful whether God really wants us to so definitely stick to a certain cumbersome formula for establishing Ramadan timings. After all, did God clearly explain Ramadan timings in the Quran? After reading brother Layth and Ayman's highly intricate methods, I start to doubt that.....