The sun and the moon's gravitational forces will determine how high a tide is and when it will come in

Give your Weekend leisure reading a lift with the Irish Examiner's upbeat makeover of its popular Weekend publication.

Irish Examiner Terms & Conditions The promoter and data controller is the Irish Examiner, Linn Dubh, Assumption Road, Blackpool, Cork. Any prize is as stated in any messaging or promotions advertising such competition.