Sergei Morozov

It is offered to translate existing Gregorian and Julian 12-month’s calendars simultaneously from the passive form in active (having fixed the beginning of year intercalary day transfer in the end of the year for December from February), and to make its absolutely exact, having entered a calendar constant a = 96,875/400 = 31/128 = 0,2421875 = |r = const = Kn days instead of traditional accuracy a = 97/400 = 31,04/128 = 0,2425 days in a Gregorian calendar, and instead of accuracy a = 100/400 = 32/128 = 0,25 days, in Julian calendar that becomes only purely mathematical and does not result in any material inputs. Then both existing nowadays a calendar will cease to disperse among them and thus calendar church split 1582 between Catholic and Orthodox faiths will be liquidated. In the simplest case, it is possible to be limited to the existing passive form of a calendar, but with obligatory transition on absolutely exact a calendar constant. The author suggests these new ultraprecise absolutely coordinated mathematical Christian calendars to name Franciscan Catholic and Kirillian Orthodox. The author has resulted all the main (cores) 13 calendar systems of modern mankind to uniform (purely mathematical global or universal) a digital reference Exchange Active (Astronavigating) Calendar (Quantum) Matrix (EACM) which can become eternal uniform Abrahamic or a Universal calendar of mankind [uniform (global or universal) digital reference Exchange Activ (Astronavigating) Calendar (Quantum) Matrix (EACM)].