The Archbishop of Armagh, Dr Sean Brady, will celebrate Mass at St Patrick's Cathedral, Armagh, at midnight tonight. Tomorrow, he will celebrate Mass in St Malachy's Church, Armagh, at 8.30 a.m. and at St Patrick's Church, Dundalk, at noon.The Archbishop of Dublin, Dr Desmond Connell, will celebrate Mass at the Pro Cathedral at 10 p.m. tonight. Christmas carols will be sung by the Palestrina Choir at 9.30 p.m.There will be a festival of nine lessons and carols at St Patrick's Cathedral, Dublin, at 4 p.m. today, with admission by ticket only. Tomorrow, there will be Eucharist from 7.30 a.m. to 8.30 a.m. and Sung Eucharist at 11.15 a.m. The preacher will be the Dean, the Very Rev Maurice Stewart. See Church Services: page 21