Earth at Night: Free Nighttime Lights Map
With Off-Nadir Delta, you can view and analyze NASA VIIRS Black Marble nighttime imagery. Track urban development, economic activity, and power infrastructure directly in your browser.
Global Coverage
View nighttime imagery for any location on Earth, from cities to remote regions.
Power Monitoring
Detect power outages and infrastructure changes by comparing light intensity.
Development Tracking
Monitor urban expansion and economic development through light patterns.
Technical Specifications
NASA Black Marble Products
VNP46A2 (Daily)
Moonlight and atmosphere-corrected nighttime radiance. Cloud-masked with gap-filling for analysis-ready data.
Satellites
Suomi NPP (2011+) and NOAA-20/JPSS-1 (2017+). Dual satellite coverage for improved temporal resolution.
Applications
Power Outage Detection
Identify affected areas after storms, earthquakes, or grid failures
Urban Development
Track city growth and infrastructure expansion over years
Economic Analysis
Light intensity correlates with economic activity and GDP
Conflict Monitoring
Assess humanitarian situations through infrastructure status
How It Works
Navigate to Your Area
Pan and zoom to any city, region, or country.
Search for VIIRS Data
Select date range to find nighttime imagery.
Add to Map
View nighttime lights with customizable brightness.
Analyze Patterns
Compare dates to detect changes in illumination.
Frequently Asked Questions
What is VIIRS Black Marble?▼
What resolution is available?▼
How often is new data available?▼
Can I detect power outages?▼
What does light intensity indicate?▼
Explore Nighttime Lights
View Earth at night with a free account. NASA data, no installation required.