Important environmental information for growing here in Santa Clara county...
Astronomical Solstice/Equinox Dates
2025Winter Solstice: Sun Dec 21 2025 07:02:36 GMT-0800 (PST)
2026Vernal Equinox: Fri Mar 20 2026 07:45:02 GMT-0700 (PDT)
2026Summer Solstice: Sun Jun 21 2026 01:24:21 GMT-0700 (PDT)
2026Autumnal Equinox: Tue Sep 22 2026 17:04:56 GMT-0700 (PDT)
2026Winter Solstice: Mon Dec 21 2026 12:49:39 GMT-0800 (PST)
Meteorological Dates
First day of fall 2025: Mon Sep 01 2025
First day of winter 2025: Mon Dec 01 2025
First day of spring 2026: Sun Mar 01 2026
First day of summer 2026: Mon Jun 01 2026
First day of fall 2026: Tue Sep 01 2026
Sun Information
For today, Friday November 14 2025
Sunrise: 06:46:40
Sunset: 16:58:00
Transit: 11:52:20
Civil twilight begin: 06:18:58
Civil twilight end: 17:25:41
Nautical twilight begin: 05:47:29
Nautical twilight end: 17:57:10
Astronomical twilight begin: 05:16:37
Astronomical twilight end: 18:28:03
For tomorrow, Saturday November 15 2025
Sunrise: 06:47:43
Sunset: 16:57:17
Transit: 11:52:30
Civil twilight begin: 06:19:58
Civil twilight end: 17:25:02
Nautical twilight begin: 05:48:26
Nautical twilight end: 17:56:34
Astronomical twilight begin: 05:17:31
Astronomical twilight end: 18:27:29
Frost Dates and Growing Period
First frost date (2025): Fri Dec 12 2025
Last frost date (2026): Tue Feb 17 2026
Number of days in the 2025 growing season: 292
Note that frost dates are derived from historical patterns.