now i've checked the death date too nd january is old style as well the exact date of shah jahan's death is not in his own chronicle which i am translating but in that of his successor alamgir aurangzeb in the ma sir i lamg r the author notes in the chapter on aurangzeb's seventh year of reign i e of the hijra early in the night of monday the th rajab shah jahan succumbed to the disease and gave up the ghost s q musta idd kh n ma sir i lamg r tr jadunath sarkar nd ed delhi p th rajab ah gives st february ad new style and nd january ad old style date calculations can be done easily with the swiss calendar converter greetings