If you were not outside of Canada because you or your spouse were employed as a Crown servant, then I do not believe you have to send CIT0177. You have to list the times spent outside, explain and provide police certificate if you were in a specific country for more than 183 days from that country.
This means the days spent outside of Canada will not count towards the 1095 days (CIT0177 is for people who were in service of the Crown while outside of Canada, and because of the public service, their days outside would count towards the 1095 days).
This is my understanding, anyway!
Cheers,