641 ?.?.?.

?? ?? ??? ???? ??? — ?????? ????? ??? ?? ?1 ???? ??? ???? ?? ?????? ???? ????? ??????? ??? ??? ??? ???? ?????? ????? ?????? ???? ??? ??????? ?????? ????? ??? ≪??? ?????≫ ?????? ??????? ?????

1 January 641 - 31 August 641 ?.?.?. = 633 ?.?.
1 September 641 - 31 December 641 ?.?.?. = 634 ?.?.