Magazine article Natural History

Dates Uncertain

Magazine article Natural History

Dates Uncertain

Article excerpt

The date for Valentine's Day is the same every year, as is the date for Independence Day in America. The dates for other holidays and events that some of us celebrate or observe change annually. According to ecclesiastical rules, the vernal equinox is fixed on March 21, even though worldwide from the years 2004 through 2103 it will occur no later than March 20. This year, 2016, depending on which time zone you live in, the vernal equinox (the first day of spring in the Northern Hemisphere) occurs on March 19 or 20. The Moon is full on March 23, the first one of spring. It's designated as the Paschal Moon, because Pesach, or Passover, was always kept on the fourteenth day of the first month, Nisan, of the old Jewish calendar, which began with the full moon. The first Sunday coming after the Paschal Moon is usually Easter Sunday, as will be the case this year, on March 27. But the ecclesiastical date assumed for the Full Moon may not coincide precisely with the astronomical one. …

Search by... Author
Show... All Results Primary Sources Peer-reviewed

Oops!

An unknown error has occurred. Please click the button below to reload the page. If the problem persists, please try again in a little while.