Sunrise and sunset times depend on your latitude, longitude, and date. Near the equator (like Sri Lanka at 7°N), day length stays relatively constant at 11-13 hours year-round. At higher latitudes (UK at 51°N), summer days can be 16+ hours and winter days less than 8 hours. The calculator uses your coordinates for accurate times.
📂 Daily Life
🌅 Sunrise & Sunset Calculator
Calculate sunrise and sunset times for any location and date. Find day length, solar noon, golden hour, and civil twilight. Perfect for photographers, farmers, and planners.
✏️ Enter Your Values
✨ Your Result
🦉Owl's Explanation
🌅
Fill in the values above and click Calculate ✨
✅ Trusted Tool
The 365tool.net Sunrise/Sunset Calculator uses standard astronomical algorithms based on NOAA Solar Calculator methodology. Accurate to within 1-2 minutes for most locations. Free for farmers, photographers, and planners. No sign-up needed.
🤔 How Does This Work?
The Sunrise/Sunset Calculator uses the NOAA Solar Calculator algorithm:
Calculates the Julian date from calendar date
Computes sun's ecliptic longitude and right ascension
Finds the hour angle when sun is at -0.833° elevation (sunrise/set)
Converts to local time using longitude
Accurate to within 1-2 minutes for most locations
❓ Frequently Asked Questions
What causes sunrise and sunset times to change?▼
Earth's axial tilt (23.5°) causes the sun to appear higher or lower in the sky throughout the year as Earth orbits the sun. At the summer solstice (June 21 in Northern Hemisphere), the sun reaches its highest point, giving the longest day. At winter solstice (December 21), the shortest day. Locations closer to the equator have less variation.
What is solar noon?▼
Solar noon is when the sun reaches its highest point in the sky and crosses the local meridian. It is not necessarily 12:00 PM — it depends on your exact longitude within your time zone and the time of year. During solar noon, shadows are shortest. Our calculator shows the precise solar noon for your location and date.
What is the golden hour for photography?▼
Golden hour is the period shortly after sunrise and before sunset when sunlight is soft, warm, and directional — ideal for photography. It typically lasts about 1 hour in temperate latitudes and less near the equator (where the sun rises and sets more vertically). Our calculator shows approximate golden hour times.
What is civil twilight?▼
Civil twilight begins at sunrise (when the sun's center is 6° below the horizon) and ends when the sun is 6° below the horizon after sunset. During civil twilight, there is enough natural light for outdoor activities without artificial lighting. Nautical twilight ends when the horizon is no longer visible at sea.
Why do different countries have different day lengths?▼
Countries near the equator (Sri Lanka, Singapore, Kenya) have nearly equal day and night year-round (about 12 hours each). Countries near the poles experience extreme variation — Norway has 24-hour daylight in summer and 24-hour darkness in winter. This variation is caused by Earth's tilted axis relative to its orbital plane around the sun.
Earth's axial tilt (23.5°) causes the sun to appear higher or lower in the sky throughout the year as Earth orbits the sun. At the summer solstice (June 21 in Northern Hemisphere), the sun reaches its highest point, giving the longest day. At winter solstice (December 21), the shortest day. Locations closer to the equator have less variation.
What is solar noon?▼
Solar noon is when the sun reaches its highest point in the sky and crosses the local meridian. It is not necessarily 12:00 PM — it depends on your exact longitude within your time zone and the time of year. During solar noon, shadows are shortest. Our calculator shows the precise solar noon for your location and date.
What is the golden hour for photography?▼
Golden hour is the period shortly after sunrise and before sunset when sunlight is soft, warm, and directional — ideal for photography. It typically lasts about 1 hour in temperate latitudes and less near the equator (where the sun rises and sets more vertically). Our calculator shows approximate golden hour times.
What is civil twilight?▼
Civil twilight begins at sunrise (when the sun's center is 6° below the horizon) and ends when the sun is 6° below the horizon after sunset. During civil twilight, there is enough natural light for outdoor activities without artificial lighting. Nautical twilight ends when the horizon is no longer visible at sea.
Why do different countries have different day lengths?▼
Countries near the equator (Sri Lanka, Singapore, Kenya) have nearly equal day and night year-round (about 12 hours each). Countries near the poles experience extreme variation — Norway has 24-hour daylight in summer and 24-hour darkness in winter. This variation is caused by Earth's tilted axis relative to its orbital plane around the sun.