Lac d'un Jour d'Octobre is a Lake located in Lac-Walker; Sept-Rivières, Quebec.

• Latitude: 50° 0' 23'' North   (decimal: 50.0064335)
• Longitude: 67° 29' 46'' West   (decimal: -67.4960601)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Walker; Sept-Rivières
• Atlas of Canada Locator Map: Lac d'un Jour d'Octobre
• GPS Coordinate Locator Map: Lac d'un Jour d'Octobre Lat/Long