The true Sabbath day is calculated by the Time/Calendar God ordained in the beginning of creation, Genesis 1:14 True Sabbaths are not calculated by the "Famous Gregorian calendar" or any other man made time. "He shall think to change times and laws..." Daniel 7:25 What calendar will be used for worship in Isaiah 66:22,23? God is seeking those who will worship Him in Spirit and in truth. Keeping God's Sabbath by God's Time in Genesis 1:14 is truth.... What if God should allow a Sabbath test to be enforce on nations, by "The Powers To Be", to see if His people will keep His Truth or no??? Read Judges 2:20-23 Judges 3:4 Also research "The Seven Noahide Laws" and the United States' Presidents connection to them. Will these laws be enforced on the world one day? God's truth is our shield and buckler, Psalms 91❤️