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I looked up the parallels for Bellingham Washington and Thunder Bay Ontario. Both are at the 48th parallel but Thunder Bay's sunset is at 9:46. The sunset in Bellingham is 9:00. How can that be if they're both at the same parallel? Would it be due to elevation?

I looked up the parallels for Bellingham Washington and Thunder Bay Ontario. Both are at the 48th parallel but Thunder Bay's sunset is at 9:46. The sunset in Bellingham is 9:00. How can that be if they're both at the same parallel? Would it be due to elevation?

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Once upon a time, communities had 'local time' , calculated from high noon in that location. The railroad changed that. The railroad's travel speed compared to horse and buggy, and the need to standardize and simplify schedules led to the adoption of time zones.