EVERY Norwegian city, town and village celebrates National Constitution Day. And, from the most remote coastal hamlet to the biggest city, children become the focus of these celebrations. Norwegians abroad also mark National Constitution Day with traditional children's parades. The 250 Norwegians in Hongkong did not miss out on the celebrations, they just had them a day earlier. While Norway celebrates its national holiday today, Hongkong's Norwegian community spent yesterday marking their country's biggest holiday. ''This has to be the only Norwegian Constitution Day parade to take place a day early, on the other side of the world, with a Scottish regimental band wearing full-dress tartan kilts!'' said Mr Lars Almklov, the Norwegian Consulate vice-consul. The Hongkong Black Watch regimental band provided the music. The somewhat different gathering was at the Norwegian school in Tao Fung Shan, close to the Temple of 10,000 Buddhas at Sha Tin. Lessons are given in Norwegian at the school, with English taught as a second language. Speaking before the event, Mr Almklov confessed the Black Watch band might outnumber the children, because there was only a dozen or so pupils at the school, but he said the tradition was so deep-rooted that nothing would prevent everyone having a good time. Traditionally, every secondary school in Norway has its own brass band, and the National Constitution Day celebrations represent the opportunity for them to test their skills. Mr Knut Mykland, a history professor at the University of Bergen explained that the Constitution at the root of the celebrations emerged from the Treaty of Kiel in 1814. Norway had been unified with Denmark for over 400 years, but the treaty dissolved the union.