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History

January 8, 2012

GENEALOGY: 1752 is one memorable year for genealogists

The year 1752 is one to remember if you have ancestors who lived in areas controlled by Great Britain; and this includes the American colonies. In that year, two big changes occurred in the calendar that will affect the birth, marriage and death dates of your ancestors.

The first change involved converting from the Julian calendar to the Gregorian calendar. The older Julian calendar, established by Julius Caesar, had been effect since 46 B.C. It was based on the positions of the sun and stipulated that a year was 3651⁄4 days long. To account for this extra fraction, every fourth year was given an extra day and was called leap year. However, the ancient calculations were off by about 11.25 minutes per year. This went unnoticed for some time, but by 1582 the calendar had gotten out of sync with the sun’s position by about 10 days. In effect, the vernal equinox (day of equal light and equal dark that denotes the first day of spring) was occurring on March 10 instead of March 21. If left uncorrected, the Julian calendar would gain an extra day every 128 years.

Because this error was affecting the placement of Easter, Pope Gregory XIII ordered in 1582 that a correction to be made. The day following Oct. 4 would be called Oct. 15, thus dropping the 10 extra days. To keep this error from occurring again, only one out of four years ending in “00,” (which were previously all leap years), would now be leap years.

This new calendar system was called the Gregorian calendar, and was adopted right away by predominantly Catholic countries. However, many of the Protestant areas did not want anything to do with a decree from a Catholic pope. Thus, it took another 200-300 years to be adopted worldwide.

It was adopted in 1752 by England and the American colonies. At that time, the day following Sept. 2 was moved up to Sept. 14, dropping 11 days from the calendar.

To illustrate how this affects dates, let’s look at our first president’s birthday. George Washington was born on Feb. 11 according to the Julian calendar in use at the time of his birth, but when that date was converted to the Gregorian calendar, his birthday became Feb. 22.

The second change that occurred in 1752 involved changing what we would call New Year’s Day. In areas controlled by Great Britain, the new year began on March 25, which was supposed to be the vernal equinox and the first day of spring.

This means that March 24 would be the last day of one year and March 25 would begin the next year. To illustrate, the day following March 24, 1736, was March 25, 1737. In 1752, however, Britain adopted Jan. 1 as the beginning of each new year.

Areas of strong Catholic influence (such as Maryland), Dutch influence (as in New York) and Scottish influence (all of Scotland) began using Jan. 1 as the beginning of a new year long before England did; therefore in the colonies there began a practice of using a “double dating” system on dates between Jan. 1 and March 25 prior to 1752.

Let’s look at George Washington’s birth again. He was born in February 1831/2, before Jan. 1 was universally adopted as New Year’s Day. In areas where Jan. 1 was the first of the year, it was already 1832, but in areas where March 25 was the beginning of the new year, it was still 1831. Therefore the date is written with a slash to include both years. The thing to remember is that the second date is the correct one by our present calendar. Also remember that only dates between Jan. 1 and March 24 used this double system because after March 24 the year was the same for both calendars.

So when was George Washington born? In his day, it was Feb. 11, 1831. But according to our (corrected) calendar his birth was on Feb. 22, 1832.

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