Annunciation style   Such use of Old Style OS   Washington James Evans  The History and Practice of Ancient Astronomy p   The green text was added in the last  hours The use of AS in histories is very uncommon so it will need a very good source to back up the claim Evans  Page  is available online and it does not support the writing in green because the writing in green implies that one would find  January  AS for the date of the execution of Charles I  Also Evans is presenting one of two usages for old stylenew style there are other sources available that show that modern historians also use old stylenew style to indicate an adjustment for the start of year see for example British National archives Death warrant of Charles I  Citizenship