He was awarded 13 caps for Wales and was part of the Welsh side that won the 1931 Five Nations Championship.
Day was first selected for Wales in the 1931 Five Nations tournament and was the only new cap in the Welsh squad.
[5] The match ended in a draw, though there was confusion in the match regarding a conversion form England's Don Burland; when at half-time the referee overturned the touch judges decision that he had missed the kick.
Day was selected to face the touring South Africans towards the end on 1931, as he had done so for Swansea, and was part of the 1932 Home Nations Championship.
He missed the 1933 tournament, which famously included the end of the Twickenham curse, but was back in 1934.