The President, the Vice President and the Prime Minister have greeted the people on the occasion of Christmas, which will be celebrated on Friday. In her message, the President Mrs Pratibha Devisingh Patil said that the festival of Christmas reminds us the message of Jesus Christ to promote peace, unity and harmony in the society. AIR correspondent reports that Goa is fully geared up to celebrate Christmas in a big way. <br/>Adding sparkle to the colourful Christmas celebrations in Kerala, a mammoth star, said to be the largest in the world, was unveiled at a function in Kochi this evening.<br/>Preparations are also on in Nagaland to celebrate the Christmas with all religion prayers.<br/>