Three new worldwide calendars are proposed and compared in this paper. None of them requires any departure from an existing tradition to divide years on lean and leap. Although all three are pretty accurate, it is demonstrated that the Julian calendar with one additional amendment is the simplest and the most suitable for implementation.
References
[1]
L. E. Doggett, “Calendars,” In: P. K. Seidelmann, Ed., Explanatory Supplement to the Astronomical Almanac, US Naval Observatory, University Science Books Company, Mill Valley, 1992.
[2]
D. D. McCarthy and P. K. Seidelmann, “TIME from Earth Rotation to Atomic Physics,” Chapter 10 & 11, Wiley-VCH, Weinheim, 2009.
doi:10.1002/9783527627943
[3]
J. H. Meeus, “Astronomical Algorithms,” 2nd Edition, Willmann-Bell, Inc., Richmond, December 1999.
[4]
B. Crun, “The Timetables of History: A Horizontal Linkage of People and Events,” Simon and Schuster, New York, 1979.
[5]
C. F. Gauss, “Berechnung des Osterfestes,” Monatliche Correspondenz zur Bef?rderung der Erd- und Himmels- Kunde, Vol. 2, August 1800, pp. 121-130.
[6]
K. Diem and C. Lentner, “Scientific Tables: Documenta Geigy,” 8th Edition, Ciba-Geigy, Tarrytown, 1986, pp. 206-207.
[7]
B. A. Archinal, “Terrestrial Coordinates and the Rotation of the Earth,” Chapter 4, In: P. K. Seidelmann, Ed., Ex- planatory Supplement to the Astronomical Almanac, US Naval Observatory, University Science Books Company, Mill Valley, 1992, p. 253.
[8]
C. Y. Hohenkerk, B. D. Yallop, C. A. Smith and A. T. Sinclair, “Celestial Reference Systems,” Chapter 4, In: P. K. Seidelmann, Ed., Explanatory Supplement to the As- tronomical Almanac, US Naval Observatory, University Science Books Company, Mill Valley, 1992, p. 116.
[9]
B. Verkhovsky, “Amended Julian Worldwide Calendar,” Annals of European Academy of Sciences, ISSN 1379- 1982, European Academy of Sciences, Brussels, 2003, pp. 330-334.
[10]
C. Clavius, “Romani Calendarii a Gregorio XIII Restituti Explicatio,” Opera Mathematica, Vol. 5, 1603, p. 13.
[11]
Gregory XIII, “Inter Gravissimas,” W. Spenser and R. T. Crowley, Translation, International Organization for Stan- dardization, Geneva, 2002 (Original work published in 1582).
