See The Reason His Friend Gave For Turning Down A Job Opportunity

My Facebook friend has turned a job which is a rear occurrence in Nigeria considering the state of the economy.

His reason being that the job requires him to work on Saturday which is against his belief.

He considers Saturday a Sabbath day which is meant to be kept holy and based on that fact, he can’t work on that same day.

My question is, which day is truly the sabbath day?