When did Luther nail the proclamations to the church door?
Reformation Day
According to Philip Melanchthon, 31 October 1517 was the day German monk Martin Luther nailed his "Ninety-five Theses" on the door of the All Saints' Church in Wittenberg, Electorate of Saxony in the Holy Roman Empire. Historians and other experts on the subject argue that Luther may have chosen All Hallows' Eve on purpose to get the attention of common people, although that has never been proved. Available data suggest that 31 October was the day when Luther sent his work to Albert of Brandenburg, the Archbishop of Mainz. This has been verified; nowadays, it is regarded as the start of the Reformation alongside the unconfirmed (Melanchthon appears to be the only source for that) nailing of the "Ninety-five Theses/grievances" to All Saints' Church's door on the same date.
Sabbath in Christianity
Lutheran founder Martin Luther stated "I wonder exceedingly how it came to be imputed to me that I should reject the law of Ten Commandments...Whosoever abrogates the law must of necessity abrogate sin also." The Lutheran Augsburg Confession, speaking of changes made by Roman Catholic pontiffs, states: "They refer to the Sabbath-day as having been changed into the Lord's Day, contrary to the Decalog, as it seems. Neither is there any example whereof they make more than concerning the changing of the Sabbath-day. Great, say they, is the power of the Church, since it has dispensed with one of the Ten Commandments!" Lutheran church historian Augustus Neander states "The festival of Sunday, like all other festivals, was always only a human ordinance".