Complex sentence: The 2016-2017 winter season broadcasts of "news from home" will mark the 63rd year of Canada Calling and Smith's 40th year as daily on air host, during which time he has never missed a day.
Split into simpler sentences: The 2016-2017 winter season broadcasts of "news from home" are now in the 63rd year. Smith has been the daily on air host for the past 40 years during which time he has never missed a day.