Recently, an innocent attempt to correct an error, in a birth date cited in a Wikipedia article, led me to a lesson in the Solar Hijri calendar, used in Iran. It was another wonderful reminder about how interesting and subtle are the calendars and clocks across cultures. Cultures can can approach the task of keeping track of days and years so differently, despite all of us living on the same planet, orbiting the same star and watching the same moon. Continue Reading »

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