Important environmental information for growing here in Santa Clara county...
Astronomical Solstice/Equinox Dates
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)
2020 Winter Solstice: Mon Dec 21 2020 02:02:26 GMT-0800 (PST)
Meteorological Dates
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
First day of winter 2020: Tue Dec 01 2020
Sun Information
For today, Wednesday January 22 2020
Sunrise: 07:17:25
Sunset: 17:21:42
Transit: 12:19:33
Civil twilight begin: 06:49:29
Civil twilight end: 17:49:38
Nautical twilight begin: 06:17:47
Nautical twilight end: 18:21:20
Astronomical twilight begin: 05:46:46
Astronomical twilight end: 18:52:21
For tomorrow, Thursday January 23 2020
Sunrise: 07:16:50
Sunset: 17:22:47
Transit: 12:19:48
Civil twilight begin: 06:48:58
Civil twilight end: 17:50:39
Nautical twilight begin: 06:17:19
Nautical twilight end: 18:22:18
Astronomical twilight begin: 05:46:20
Astronomical twilight end: 18:53:17
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 2020 growing season: 309
Note that frost dates are derived from historical patterns.