Following that logic, no branch of government should be allowed to use a calender. All the days of the week are named after pagan gods. Therefore any calender becomes a display of a religion.
And CHristmas needs to be removed as a statutory holiday. It is religious and government employees should not have this as a holiday. Christmas, as a statutory holiday, is the government deliberately forcing a religion onto its employees and the workers of the U.S. and creates a hardship for business who could profit from operating an additional day of the year. December 25 should be a regular day like any other in the eyes of the government. To treat it otherwise undermines the cultural diveristy of America and reduces us to a Taliban like state that we all abhor. </ sarcasm>