The Wayback Machine - https://web.archive.org/web/20090409073139/http://ns1763.ca:80/equinox/eqindex.html

Vernal Equinox

Dates and Times
each year for 1096 years
1452 - 2547

Listed for four time zones and in two calendars



Spring Equinox dates and times 1452 - 1811

Spring Equinox dates and times 1788 - 2211

Spring Equinox dates and times 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, are labelled outside the scanned area.

Time of Autumn Equinox, 2010 to 2120




The Wayback Machine has archived copies of this document:
Equinox Dates and Times each year for 1096 years

Archived: 2001 August 03
http://web.archive.org/web/20010803205540/http://www.geocities.com/newscotland1398/equinox/eqindex.html

Archived: 2001 November 10
http://web.archive.org/web/20011110195232/http://www.geocities.com/newscotland1398/equinox/eqindex.html

Archived: 2005 January 13
http://web.archive.org/web/20050113004845/us.p.geocities.com/newscotland1398/equinox/eqindex.html


Note: The fourteen-digit number embedded in these URLs is structured: YYYYMMDDhhmmss.
This is the date and time the site was archived.






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                           Daily Hits
            March 2005                    March 2006
       2005 Mar 31 Thu     39        2006 Mar 31 Fri     15
       2005 Mar 30 Wed     24        2006 Mar 30 Thu     22
       2005 Mar 29 Tue     43        2006 Mar 29 Wed     28
       2005 Mar 28 Mon     53        2006 Mar 28 Tue     37
       2005 Mar 27 Sun     56        2006 Mar 27 Mon     32
       2005 Mar 26 Sat     63        2006 Mar 26 Sun     22
       2005 Mar 25 Fri     64        2006 Mar 25 Sat     34
       2005 Mar 24 Thu     77        2006 Mar 24 Fri     44
       2005 Mar 23 Wed    133        2006 Mar 23 Thu     74
       2005 Mar 22 Tue    323        2006 Mar 22 Wed    139
       2005 Mar 21 Mon    858        2006 Mar 21 Tue    562
       2005 Mar 20 Sun    819        2006 Mar 20 Mon   2182
       2005 Mar 19 Sat    446        2006 Mar 19 Sun    576
       2005 Mar 18 Fri    357        2006 Mar 18 Sat    208
       2005 Mar 17 Thu    295        2006 Mar 17 Fri    324
       2005 Mar 16 Wed    283        2006 Mar 16 Thu    256
       2005 Mar 15 Tue    253        2006 Mar 15 Wed    233
       2005 Mar 14 Mon    245        2006 Mar 14 Tue    265
       2005 Mar 13 Sun     91        2006 Mar 13 Mon    195
       2005 Mar 12 Sat     74        2006 Mar 12 Sun     94
       2005 Mar 11 Fri     87        2006 Mar 11 Sat     63
       2005 Mar 10 Thu    123        2006 Mar 10 Fri    114
       2005 Mar 09 Wed    129        2006 Mar 09 Thu     93
       2005 Mar 08 Tue    120        2006 Mar 08 Wed    125
       2005 Mar 07 Mon    100        2006 Mar 07 Tue    146
       2005 Mar 06 Sun     59        2006 Mar 06 Mon    141
       2005 Mar 05 Sat     60        2006 Mar 05 Sun     87
       2005 Mar 04 Fri     62        2006 Mar 04 Sat     54
       2005 Mar 03 Thu     78        2006 Mar 03 Fri    101
       2005 Mar 02 Wed    112        2006 Mar 02 Thu    127
       2005 Mar 01 Tue    119        2006 Mar 01 Wed    184
       2005 Feb 28 Mon     83        2006 Feb 28 Tue    129
       2005 Feb 27 Sun     33        2006 Feb 27 Mon    117
       2005 Feb 26 Sat     35        2006 Feb 26 Sun     47



  Hits per calendar month
       2008 Mar   3099
       2008 Feb    597
       2008 Jan    442

       2007 Dec    304
       2007 Nov    220
       2007 Oct    200
       2007 Sep    448
       2007 Aug    158
       2007 Jul    149
       2007 Jun    133
       2007 May    127
       2007 Apr    255
       2007 Mar   1123
       2007 Feb    192
       2007 Jan    191

       2006 Dec    109
       2006 Nov     73
       2006 Oct     -
       2006 Sep     -
       2006 Aug     -
       2006 Jul     -
       2006 Jun     -
       2006 May     -
       2006 Apr     -
       2006 Mar   6577
       2006 Feb   1331
       2006 Jan    699
"-" means data are not available

       2005 Dec    436
       2005 Nov    300
       2005 Oct    218
       2005 Sep    467
       2005 Aug    211
       2005 Jul    142
       2005 Jun    309
       2005 May    247
       2005 Apr    484
       2005 Mar   5645
       2005 Feb   1107
       2005 Jan    583

       2004 Dec    264
       2004 Nov    250
       2004 Oct    240
       2004 Sep    398
       2004 Aug    146
       2004 Jul    100
       2004 Jun    161
       2004 May    202
       2004 Apr    353
       2004 Mar   3845
       2004 Feb    962
       2004 Jan    346

       2003 Dec    102
       2003 Nov     52
       2003 Oct     41
       2003 Sep    148
       2003 Aug     66
       2003 Jul     62
       2003 Jun    101
       2003 May    106
       2003 Apr    368

First uploaded to the WWW:   1996 February 29
Equinox graph installed:   2001 March 22
Script upgraded to HTML 4.01:   2001 April 21
Moved to new hosting service:   2006 October 21
Latest update:   2008 September 26