GIS Day

GIS Day is observed worldwide on the third Wednesday of November. The day highlights geographic information systems, or GIS, and shows how digital mapping and spatial data help people understand places, plan communities, respond to emergencies, protect the environment, and navigate everyday life.

History of GIS Day

GIS Day was first held in 1999 as part of Geography Awareness Week. The observance was supported by Esri co-founder Jack Dangermond and other organizations that wanted to increase public understanding of geographic information systems.

Modern GIS developed during the second half of the 20th century. Canadian geographer Roger Tomlinson played a major role in creating the Canada Geographic Information System during the 1960s and is often called the father of GIS.

As computer technology improved, GIS became useful in government, science, transportation, business, public health, agriculture, and education. Today, these systems combine maps with data to reveal patterns, relationships, and changes across locations.

Interesting Facts About GIS Day

• GIS combines maps with information about people, places, infrastructure, and natural features.
• Roger Tomlinson helped develop one of the earliest operational computerized geographic information systems.
• Satellite imagery and aerial photography are important sources of geographic data.
• Emergency services use GIS to plan routes, assess hazards, and coordinate disaster response.
• Urban planners use spatial data to study transportation, housing, utilities, and population growth.
• GIS supports environmental research by tracking forests, water, wildlife habitats, and land use.
• Digital navigation systems rely on geographic databases, positioning technology, and regularly updated maps.

How GIS Day Is Observed

GIS Day is observed through school activities, public demonstrations, workshops, map exhibitions, lectures, and online events. People can take part by learning how digital maps are created, exploring an interactive mapping project, attending a local event, or showing someone how navigation and location-based tools work. Students can also create simple maps using publicly available geographic data.

When Is GIS Day in 2026?

GIS Day is observed on the third Wednesday of November each year.

Observations