Edmonton's daylight duration is shorter than that of Calgary because Edmonton is at a lower latitude than Calgary.
We can arrive at this answer because:
Latitude is an essential factor in indicating the length of the day in a region.
Latitude is the horizontal lines, which measure the north-south position between the poles, using the equator line as a reference.
Latitude is measured in degrees and the highest numbers are placed in regions that are close to the equator.
As you move away from the equator towards the poles, latitude decreases.
The higher the latitude, the longer the duration of daylight. So if Edmonton has fewer hours of sunlight than Calgary it is because Edmonton is at a lower latitude.
