Nowruz marks the end of the old year and the beginning of a new one, and it occurs on the day of the vernal equinox. More accurately, the new year begins the second the equinox does — so, not just at the stroke of midnight. Usually, the equinox happens from March 19 to 21; this year, Nowruz lands in the evening of March 20. (Though if you’re an expat Iranian, the equinox arrives around 12...
