Daylight Hours Calculator

Calculate the number of daylight hours for any location on Earth based on latitude and date. This calculator uses astronomical formulas to determine sunrise, sunset, and total daylight duration.

Why Use This Calculator?

• Plan outdoor activities around available daylight
• Understand seasonal daylight variations
• Optimize solar panel installations
• Plan photography sessions
• Schedule gardening activities
• Prepare for travel to different latitudes

How to Use It

1. Enter your latitude (positive for North, negative for South)
2. Select the date you’re interested in
3. Get detailed information about daylight hours

Understanding Your Results

The calculator provides:

• Total daylight hours and minutes
• Sunrise time
• Sunset time
• Solar noon time
• Current daylight status

Seasonal Variations

The amount of daylight varies throughout the year due to:

• Earth’s axial tilt (23.5 degrees)
• Seasonal changes
• Latitude position
• Time of year

Special Cases

• Polar Day: 24 hours of daylight (summer in polar regions)
• Polar Night: 24 hours of darkness (winter in polar regions)
• Equinox: Equal day and night (around March 20 and September 22)
• Solstice: Longest/shortest days (around June 21 and December 21)

Technical Notes

• Calculations use the astronomical formula for solar position
• Times are adjusted for atmospheric refraction
• Results are approximate due to local terrain and atmospheric conditions
• Accuracy is typically within a few minutes
• Civil twilight is not included in daylight hours