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This PR contains the following updates:

Package	Change	Age	Confidence
SunCalcNet	3.0.1 → 3.1.0

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Release Notes

kostebudinoski/SunCalc-Net (SunCalcNet)

v3.1.0

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Minor release: fixes sun phase times on days the sun only just reaches an angle, and adds FindTime for looking up a phase that may not occur. No breaking changes.

• Fixed GetSunPhases on days the sun only just reaches a phase angle. A twilight or night event could come back hours or even weeks away from its angle. Such events are now omitted when the sun doesn't cross the angle, and found to within a second when it does. Also fixed the single sunrise or sunset that was missing on the first and last day of the midnight sun or polar night. Results on other days are unchanged. Port of SunCalc JS v2.1.2 (https://github.com/mourner/suncalc/releases/tag/v2.1.2).
  Resolves: mourner/suncalc#191

Location, day	Event	3.0.1	3.1.0
London, 22 May 2026	Night	21:15 UTC, sun at −9.3°	none (sun stays above −18°)
Berlin, 26 Jul 2027	Night End	18 Jul 19:05 UTC, 8 days early	none
Tromsø, 14 Aug 2026	Dawn	03:12 UTC, after sunrise	none
67°N, 18 Apr 2026	Nautical Dusk	14 Jun, 57 days later	none
Tromsø, 18 May 2026	Sunrise	missing	17 May 22:52 UTC

• Added SunPhaseExtensions.FindTime(name), which returns when a phase occurs as a DateTimeOffset?, or null when it doesn't happen that day. SunPhase is a struct, so FirstOrDefault on a missing phase silently returns a year-1 time.

var phases = SunCalc.GetSunPhases(date, 51.5, -0.13);

DateTimeOffset? night = phases.FindTime(SunPhaseName.Night);   // null: no astronomical night tonight
TimeSpan? dayLength = phases.FindTime(SunPhaseName.Sunset) - phases.FindTime(SunPhaseName.Sunrise);

If you look up phases with First(...), note that more summer twilight events can now be missing at higher latitudes, so use FindTime or FirstOrDefault for phases other than solar noon and nadir.

Install: dotnet add package SunCalcNet --version 3.1.0 · NuGet (https://www.nuget.org/packages/SunCalcNet/3.1.0)

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