i found this article, what are your thoughts on this?!
To give a concrete example of the ramifications of this question, consider the following:
However, i make the following calculation. Since I was flying east, I lost some daylight hours. I will have a total of 11 hours of daylight which began at 8am Israel time. Using those figures, sof zman tefilla comes out to be just before noon, and I will have time to daven after collecting my belongings.
The same type of calculation can come into play in a number of ways, with real halakhic ramifications. The question is a fundamental one, though: are zmanim calculated based on geographical realities or human realities? Is it about the place or the person?
Anyone address this?