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 2021
In Local Time Zone UT-05:00

March Equinox     = 2459293.90160112 = 2021 Mar 20 09:38:18 Sat  TT
                                     = 2021 Mar 20 04:37:06 Sat  Local Std Time

June Solstice     = 2459386.64811843 = 2021 Jun 21 03:33:17 Mon  TT
                                     = 2021 Jun 20 22:32:05 Sun  Local Std Time

September Equinox = 2459480.30673813 = 2021 Sep 22 19:21:42 Wed  TT
                                     = 2021 Sep 22 14:20:29 Wed  Local Std Time

December Solstice = 2459570.16696655 = 2021 Dec 21 16:00:26 Tue  TT
                                     = 2021 Dec 21 10:59:13 Tue  Local Std Time
NOTE:
To adjust for daylight saving/summer time, add 1 hour to local standard time.


Jay Tanner - 2021