Wales will play all of next season's RBS Six Nations games on a Saturday.
Wales and Ireland will face each other next year on a Saturday
Welsh Rugby Union chief executive Roger Lewis told BBC Radio Wales' Scrum V that an agreement has been made with Ireland to benefit the supporters.
This year the match against Ireland was on Sunday and there has been discussion about holding games on Friday nights.
"I was open to exploring Friday nights because that is better than Sunday, but the ideal position is to get it all on a Saturday," Lewis said.
"I've been over in Ireland every week for the past six weeks and this week I talked to John Feehan, a great friend of ours who is the chief executive of the Six Nations.
"It's great news and I've always said that I'm sensitive to the fans."
Sunday matches in the tournament have been less favoured by many fans, especially away supporters, as travelling home on Sunday evenings after matches has proved unpopular and problematic.
Wales had two home matches and three away in this season's Six Nations, with all but the Sunday opener against Ireland played on Saturday.
Next year they will face Italy, France and Scotland on home turf in Cardiff's Millennium Stadium, with trips to face Ireland in Dublin and England at Twickenham.
The WRU has started the process to elect a new president, who is expected to be in place within the next eight weeks.
That follows the death last November of the former Wales and British Lions player Keith Rowlands, who had been president since 2004.
Letters were sent out to all WRU member clubs on Friday seeking nominations for their candidates.
Each club can nominate one candidate, with each candidate requiring two club nominations for their name to go forward to the election ballot.
The nominations will close on Friday, 13 April and ballot papers will then be issued to all clubs on Monday,16 April.
The formal closing date is three weeks later on Monday, 7 May, following which the new president will be announced formally.