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 2025
In Local Time Zone UT-05:00

March Equinox     = 2460754.87727812 = 2025 Mar 20 09:03:17 Thu  TT
                                     = 2025 Mar 20 04:02:02 Thu  Local Std Time

June Solstice     = 2460847.61346240 = 2025 Jun 21 02:43:23 Sat  TT
                                     = 2025 Jun 20 21:42:08 Fri  Local Std Time

September Equinox = 2460941.26406934 = 2025 Sep 22 18:20:16 Mon  TT
                                     = 2025 Sep 22 13:19:01 Mon  Local Std Time

December Solstice = 2461031.12792524 = 2025 Dec 21 15:04:13 Sun  TT
                                     = 2025 Dec 21 10:02:58 Sun  Local Std Time
NOTE:
To adjust for daylight saving/summer time, add 1 hour to local standard time.


Jay Tanner - 2025