Source: US News & World Report Leaders in the Orthodox Church say the religion may need to adapt to contemporary times to remain relevant. By Sintia Radu, Staff Writer A season of religious holidays around the world moves into higher gear on Wednesday with the observance of one of the most important saints in the Orthodox Church, a person whose gift-giving legacy is partially tied to the birth of the Santa Claus legend in the U.S.and Father Christmas in the U.K. But with the arrival of St. Nicholas Day – observed on Dec. 6 in Western Christian nations but on different December days…