What affects daylight hours?

Latitude and date (solar declination). Longer days in summer; extreme at poles.

Gardening (planting times), solar panel output estimates, astronomy, and outdoor planning.

Daylight Hours Finder Calculator

Find the approximate number of daylight hours for any date and latitude, crucial for understanding plant photoperiods.

Find the approximate number of daylight hours for any date and latitude.

Date

Latitude (degrees)

The full supporting guide for this calculator is still being expanded. The tool remains accessible while we improve the educational content.

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