Important environmental information for growing here in Santa Clara county...
Astronomical Solstice/Equinox Dates
2019Winter Solstice: Sat Dec 21 2019 20:18:56 GMT-0800 (PST)
2020Vernal Equinox: Thu Mar 19 2020 20:49:35 GMT-0700 (PDT)
2020Summer Solstice: Sat Jun 20 2020 14:43:02 GMT-0700 (PDT)
2020Autumnal Equinox: Tue Sep 22 2020 06:30:27 GMT-0700 (PDT)
2020Winter Solstice: Mon Dec 21 2020 02:02:26 GMT-0800 (PST)
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, Wednesday November 13 2019
Sunrise: 06:45:56
Sunset: 16:58:31
Transit: 11:52:13
Civil twilight begin: 06:18:17
Civil twilight end: 17:26:10
Nautical twilight begin: 05:46:50
Nautical twilight end: 17:57:37
Astronomical twilight begin: 05:15:59
Astronomical twilight end: 18:28:28
For tomorrow, Thursday November 14 2019
Sunrise: 06:46:59
Sunset: 16:57:47
Transit: 11:52:23
Civil twilight begin: 06:19:16
Civil twilight end: 17:25:30
Nautical twilight begin: 05:47:46
Nautical twilight end: 17:57:00
Astronomical twilight begin: 05:16:53
Astronomical twilight end: 18:27:53
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.