Why is Alberta called the sunshine province?

Alberta is called the Sunshine Province because it receives more hours of sunshine than any other province in Canada. The average number of sunshine hours in Alberta is 2,430 per year, compared to the Canadian average of 1,956 hours. This is due to Alberta's location in the rain shadow of the Rocky Mountains, which blocks much of the moisture from the Pacific Ocean from reaching the province. As a result, Alberta has a relatively dry climate with low humidity, which contributes to the high levels of sunshine.