A056997 Number of days in months of Ethiopic calendar.

30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 6

Offset

1,1

Comments

The twelve months of Maskaram, Tepemt, Khedar, Takhsas, Ter, Yakatit, Magabit, Miyazya, Genbot, Sane, Harnle and Nahase each have thirty days and the remaining days are in Paguemen.

The intercalary month has 5 days on non-leap years, 6 days on leap years. Every fourth year is a leap year, with no exceptions. Thus, a(n) = a(n-52). - Jon E. Schoenfield, Feb 16 2015

Links

Table of n, a(n) for n=1..52.

A. Molla, The Ethiopic Calendar

PandaWave Company, World Calendars [archived link]

E. G. Richards, Mapping Time, The Calendar and its History, Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, Reprinted 1999 (with corrections) page 231-5, 290, 311, 321.

Wikipedia, Ethiopian Calendar

Crossrefs

Cf. A056958.

Sequence in context: A244948 A282130 A125564 * A056958 A010869 A078287

Adjacent sequences: A056994 A056995 A056996 * A056998 A056999 A057000

Keyword

nonn

Author

Robert G. Wilson v, Sep 06 2000

Extensions

As Antti Karttunen points out, this cannot be right as there are 15 or 16 30's between pairs of 5's, not 11. - N. J. A. Sloane, Aug 25 2002

Marked one link as broken. Added two links and cf. to the Coptic Calendar. - R. J. Mathar, Oct 13 2008

Status

approved