The 7day week cycle, has never changed, people have always known that the evening that the morning were another day, since the beginning of timewe have had 4 and 10 days weeks too in our ancient past, they avvoided 7 days weeks cause 7days week was an unlcucky number
Looking at the creation week in the book of Genesis, it is quite clear that God made 7days and only rested on the 7th day after working the first sixexplain way a week is actually 7,383 days then strange for a perfect being being unable to crete a perfect week
God said
God said that after creating everything he would rest the seventh day and stated that he made it the sabbath day. The calendar never changed, Sunday is the first day of the week and the last day is Saturday or The Sabbath Day. The pope changed it and caused confusion. People shouldn't trust the pope because he is just a idol he is supposed to preach the word of god truth fully with no change. The All Seeing Eye can be viewed in many Orthodox churches as well as the skull and bones symbol. So you can't trust the Orthodox as well.
Follow this link: http://www.jesus-is-savior.com/False%20Religions/Russian_Orthodox/ro_08.htm