Time Until Sunset Calculator Online: Find Sunset Time Easily

Introduction

A Time Until Sunset Calculator is a convenient online tool that tells you how much time is left until the sun sets at your location. It is especially useful for photographers, outdoor enthusiasts, travelers, and anyone planning activities around sunset. By using a Time Until Sunset Calculator online, you can quickly determine the remaining daylight hours and plan your schedule effectively. The tool considers your current location, date, and local time to provide accurate results, making it an essential tool for daily planning.

Formula / Working

The Time Until Sunset Calculator works by calculating the difference between the current time and the local sunset time. The steps include:

1. Determine your current location using latitude and longitude or IP-based geolocation.
2. Calculate the sunset time for the given location and date using astronomical formulas:

Sunset Time=12+115arccos⁡(−tan⁡(latitude)⋅tan⁡(declination))\text{Sunset Time} = 12 + \frac{1}{15} \arccos \left( -\tan(\text{latitude}) \cdot \tan(\text{declination}) \right)Sunset Time=12+151​arccos(−tan(latitude)⋅tan(declination))

Where:

• Latitude = your geographical latitude
• Declination = sun’s declination for that day

3. Subtract the current local time from the sunset time to find the remaining duration until sunset.

The calculator automatically handles time zones and daylight saving adjustments to ensure accuracy.

Step-by-Step Usage

Using the Time Until Sunset Calculator online is easy:

1. Enter your location manually or allow the tool to detect it automatically.
2. Select the date (default is today).
3. Click the “Calculate” button.
4. The tool displays the exact time remaining until sunset in hours and minutes.
5. Optionally, view the sunrise and sunset times for reference or planning.

No manual calculation or lookup is needed—the tool provides instant results.

Examples

Example 1:

• Location: New York City, USA
• Date: September 18, 2025
• Current Time: 3:00 PM
• Sunset Time: 6:45 PM
• Result: 3 hours 45 minutes remaining until sunset

Example 2:

• Location: London, UK
• Date: June 21, 2025
• Current Time: 7:30 PM
• Sunset Time: 9:21 PM
• Result: 1 hour 51 minutes remaining until sunset

Example 3:

• Location: Sydney, Australia
• Date: December 25, 2025
• Current Time: 5:15 PM
• Sunset Time: 8:03 PM
• Result: 2 hours 48 minutes remaining until sunset

FAQs

Q1: Can I calculate sunset time for any city in the world?
A1: Yes, the calculator works for any valid location worldwide.

Q2: Does it account for daylight saving time?
A2: Yes, the tool automatically adjusts for local daylight saving changes.

Q3: Can I find out the time until sunrise too?
A3: Many online sunset calculators provide sunrise and solar noon information as well.

Q4: Is the tool accurate?
A4: Yes, it uses precise astronomical calculations to provide accurate local sunset times.

Q5: Can I use it for planning photography sessions?
A5: Absolutely! It’s ideal for photographers who want to capture the golden hour or sunset moments.