The times of Sunrise, Sunset and twilights can be calculated for the month ahead using a fixed position or for the duration of a voyage.

If a fixed position is used, then Summer Time can be automatically applied.

When a voyage plan is in use, ship’s time can be calculated automatically, modified to allow for weekends and then exported back to the voyage plan.

Times of Sunrise, Sunset, Astronomical, Nautical and Civil Twilights are all based on the expected position at the time of the event.

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