Has the calendar been changed? Were not ten days dropped out of the calendar at one time? How about living on a round earth, does not one either gain a day or lose a day in traveling around the world? How about Joshua’s long day did not that change the weekly cycle? How can we know that the name Saturday, the present seventh day of the week, was placed on the seventh day of the week according to the Hebrew calendar? To all these questions there are definite answers and many lines of positive proof. Let us investigate and find the facts as God’s Word says.