The multinational comparative time use survey conducted in 1965-1966 led the subsequent time use research. Though Japan did not participate in this multinational comparative time use research, Japanese time use research group conducted time use survey following the survey method of the multinational comparative time use research in 1972. The survey was conducted in Matsuyama City. Japanese time use research group conducted the follow-up surveys in 1991 and 2013 in the same city using the same method. Various data of the multinational comparative time use research revealed that Japanese fathers spent less time on housework and child care than fathers in other countries. This study aims at clarifying the transition of time devoted to child care by fathers over 40 years. Though time spent on child care by fathers on weekdays has not changed for 40 years, time spent on child care on Sundays has increased for 40 years. Time devoted to child care by fathers, however, is still less than fathers in other countries. Though time spent on child care by fathers on Sundays has increased for 40 years, time spent on child care by mothers on Sundays has not decreased for 40 years.