The complex history of standardizing time
The world today is very neatly divided into 24 efficient, well-ordered time zones that correspond with the 24 hours in a day. If it’s 2 p.m. in Philadelphia, it’s 11 a.m. in Los Angeles, 7 p.m. in London, 8 p.m. in Paris, 9 p.m. in Tel Aviv, and 4 a.m. tomorrow in Seoul. Time is uniform, but it wasn’t always so. Standardization didn’t begin to emerge until the late 19th century.