The apparent move comes after South Korea said a day earlier it would do the same, starting on Tuesday. They are some of the first practical, if small, steps toward reconciliation following Friday's summit between the leaders of the two nations.
As a goodwill gesture ahead of the summit, South Korea had turned off its loudspeakers that broadcast a mixture of news, Korean pop songs and criticism of the North Korean regime.
In another small sign, North Korea said Monday it would shift its clocks forward half an hour to align with its southern neighbor.
(Reporting by Malcolm Foster. Editing by Lincoln Feast)