Local Dates and Times of the Equinoxes and Solstices
For Any Gregorian Year From 1600 to 2200 and Local Time Zone


Based on the NASA/JPL DE405 Ephemeris Model and the NASA Polynomials For Delta T
Gregorian Year (1600 to 2200) =       Local Standard Time = UT :   
Dates and Local Standard Times of the Equinoxes and Solstices For Year 2018
In Local Time Zone UT-05:00

March Equinox     = 2458198.17859735 = 2018 Mar 20 16:17:11 Tue  TT
                                     = 2018 Mar 20 11:16:00 Tue  Local Std Time

June Solstice     = 2458290.92251629 = 2018 Jun 21 10:08:25 Thu  TT
                                     = 2018 Jun 21 05:07:14 Thu  Local Std Time

September Equinox = 2458384.57982580 = 2018 Sep 23 01:54:57 Sun  TT
                                     = 2018 Sep 22 20:53:46 Sat  Local Std Time

December Solstice = 2458474.43323975 = 2018 Dec 21 22:23:52 Fri  TT
                                     = 2018 Dec 21 17:22:41 Fri  Local Std Time
NOTE:
To adjust for daylight saving/summer time, add 1 hour to local standard time.


Jay Tanner - 2018