Dates and Times of the Equinoxes and Solstices
For Any Date and Time Within the Range From 1600 to 2200


Based on the NASA/JPL DE405 Ephemeris Model and the NASA Polynomials For Delta T
Gregorian Year (1600 to 2200) =       Local Standard Time = UTC :   
Dates and Local Standard Times of the Equinoxes and Solstices For Year 2015
In Local Time Zone UTC-05:00

March Equinox     = 2457102.44876918 = 2015 Mar 20 22:46:14 Fri  TT
                                     = 2015 Mar 20 17:45:05 Fri  Local Time

June Solstice     = 2457195.19377198 = 2015 Jun 21 16:39:02 Sun  TT
                                     = 2015 Jun 21 11:37:53 Sun  Local Time

September Equinox = 2457288.84893418 = 2015 Sep 23 08:22:28 Wed  TT
                                     = 2015 Sep 23 03:21:19 Wed  Local Time

December Solstice = 2457378.70073788 = 2015 Dec 22 04:49:04 Tue  TT
                                     = 2015 Dec 21 23:47:55 Mon  Local Time


NOTE:
To adjust for daylight saving/summer time, add 1 hour to computed local time.


Jay Tanner - 2015