Vernal Equinox

Dates and Times of Day
each year for 1096 years
1452 - 2547

Listed for four time zones and in two calendars




Spring Equinox 1452 - 1811

Spring Equinox 1788 - 2211

Spring Equinox 2188 - 2547
 
From 1452 to 2547: 
the  earliest spring equinox is March 19, 2496, at 12:28 pm U.T.
                                                    8:28 am A.S.T.
                                                    7:28 am E.S.T.
                                                    4:28 am P.S.T.

and the latest spring equinox is March 21, 1503, at 8:42 pm U.T. 
                                                    4:42 pm A.S.T.
                                                    3:42 pm E.S.T.
                                                   12:42 pm P.S.T.





There is a remarkable pattern in the dates and times of day of the Spring Equinox, but this pattern is almost impossible to discern by reading the columns of numbers which record these dates and times. The pattern becomes plain when you look at a graph showing the dates and times. The graph is plotted with calendar years along the horizontal axis and, along the vertical axis, time of day and day of March at which the equinox occurs in each year.

A small sample of a graph like this is shown below. This sample is for the Autumn Equinox, but the pattern for the Spring Equinox is the same (with different dates and times of course). This sample was scanned in March 2001 from part of a paper graph made in 1988, using an Amiga 2000 computer and an Epson L-1000 pin matrix printer. The graph measures 120 × 35&#160cm, and shows the date and time of the Autumn Equinox for each year from 1787 to 2212. In this scanned sample, the heavy black text was superimposed to identify axis positions which, in the original, lie outside the scanned area.

Time of Autumn Equinox, 2010 to 2120





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