Important environmental information for growing here in Santa Clara county...
Astronomical Solstice/Equinox Dates
2019 Autumnal Equinox: Mon Sep 23 2019 00:49:29 GMT-0700 (PDT)
2019 Winter Solstice: Sat Dec 21 2019 20:18:56 GMT-0800 (PST)
2020 Vernal Equinox: Thu Mar 19 2020 20:49:35 GMT-0700 (PDT)
2020 Summer Solstice: Sat Jun 20 2020 14:43:02 GMT-0700 (PDT)
2020 Autumnal Equinox: Tue Sep 22 2020 06:30:27 GMT-0700 (PDT)
Meteorological Dates
First day of fall 2019: Sun Sep 01 2019
First day of winter 2019: Sun Dec 01 2019
First day of spring 2020: Sun Mar 01 2020
First day of summer 2020: Mon Jun 01 2020
First day of fall 2020: Tue Sep 01 2020
Sun Information
For today, Sunday September 15 2019
Sunrise: 06:50:31
Sunset: 19:14:55
Transit: 13:02:43
Civil twilight begin: 06:24:27
Civil twilight end: 19:40:59
Nautical twilight begin: 05:53:46
Nautical twilight end: 20:11:40
Astronomical twilight begin: 05:22:27
Astronomical twilight end: 20:42:59
For tomorrow, Monday September 16 2019
Sunrise: 06:51:21
Sunset: 19:13:22
Transit: 13:02:22
Civil twilight begin: 06:25:18
Civil twilight end: 19:39:25
Nautical twilight begin: 05:54:39
Nautical twilight end: 20:10:04
Astronomical twilight begin: 05:23:25
Astronomical twilight end: 20:41:18
Frost Dates and Growing Period
First frost date (2019): Sun Dec 08 2019
Last frost date (2020): Mon Feb 10 2020
Number of days in the 2019 growing season: 314
Note that frost dates are derived from historical patterns.