Rapa Nui calendar

William J. Thomson, paymaster on the USS Mohican, spent twelve days on Easter Island from December 19 to 30, 1886.Three sources correspond with each other except for two intercalary days (in bold), and the night of the new moon in Englert, which seems to have been confused with one of these.Beginning with (o)ata, the night of the new moon, they are: The kokore are unnamed (though numbered) nights; tahi, rua, toru, haa, rima, ono are the numerals 1–6.The word kokore is cognate with Hawaiian ‘a‘ole "no" and Maori kahore "no" and Tahitian ‘aore "there is/are not"; here it may mean "without [a name], nameless".All other authors mention only twelve, and Métraux and Barthel find fault with Thomson: However, Guy[5] calculated the dates of the new moon for years 1885 to 1887 and showed that Thomson's list fit the phases of the moon for 1886.
Rapanui Man in the Moon
The Mamari Tablet of rongorongo is thought to include the Rapanui calendar. The identified calendrical information starts midway through recto line 6 (bottom center, upside down) and continues to the start of line 9 (top left). Two glyphs completing the purple sequence (ellipsis) are not visible at the start of 7. Blue and pink beaded lozenges ("accounting sets") follow the identified calendar, but their function is unknown.
lunisolar calendarEaster IslandUSS Mohicanlunar monthHotu-MatuaMamari Tabletrongorongointercalarycognateembolismic monthWayback MachineJournal de la Société des OcéanistesA (RR1)  TahuaB (RR4)  Aruku kurengaC (RR2)  MamariD (RR3)  EchancréeE (RR6)  KeitiF (RR7)  Chauvet fragmentG (RR8)  Small SantiagoH (RR9)  Large SantiagoI (RR10) Santiago staffJ (RR20) Large reimiroK (RR19) LondonL (RR21) Small reimiroM (RR24) Large ViennaN (RR23) Small ViennaO (RR22) BerlinP (RR18) Large Saint PetersburgQ (RR17) Small Saint PetersburgR (RR15) Small WashingtonS (RR16) Large WashingtonT (RR11) Fluted HonoluluU (RR12) Honolulu beamV (RR13) Honolulu oarW (RR14) Honolulu fragmentX (RR25) Tangata manuY (RR5)  Paris snuffboxZ (T4)   Poike palimpsest– (–)    Raŋitoki fragment (possible forgery)DeciphermentHistory of Rapa NuiCalendarsLunisolarAstronomicalBuddhistChineseEthiopianGregorianLunar HijriSolar HijriUnix timeArmenianAssamese (Bhāshkarābda)AssyrianBaháʼíPawukonBengaliBangladeshiBerberBoranaBurmeseEarthly BranchesHeavenly StemsMinguoSolar termGermanic heathenGeorgianHebrewVikram SamvatIranianJalaliZoroastrianIslamicTabularJapaneseJavaneseKoreanKurdishLithuanianMaithiliMalayalamMandaeanManipuri (Meitei)MelanauMizo (Lushai)MongolianNepal SambatYele SambatPunjabiNanakshahiRomanianSomaliSesothoSlavicSlavic Native FaithMacedonianTibetanTripuriVietnameseYorubaMesoamericanLong CountCalendar roundCopticEthiopian and EritreanJulianRevisedLiturgical yearEastern OrthodoxSaintsArabianTōnalpōhualliXiuhpōhualliBabylonianBulgarByzantineCappadocianCelticCulāsakarajColignyEgyptianFlorentineFrench RepublicanGermanicHaabʼTzolkʼinMuiscaPentecontadQumranSexagenarySovietSwedishTurkmenHoloceneProleptic GregorianProleptic JulianDarianDreamspellDiscordianReform proposalsHanke–Henry PermanentInternational FixedPositivistSymmetry454ElectronicPerpetualLeap yearNew YearRegnal nameRegnal yearYear zeroAb urbe conditaAnka yearAnno DominiCommon EraAnno LucisAnno MartyrumAnno MundiBefore PresentChinese ImperialChinese MinguoEnglish and British regnal yearHijri yearHuman (Holocene)Nirayana systemSeleucidSpanishDvaparaDiscworldDungeons & DragonsMiddle-earthThe Lord of the RingsStardateStar TrekList of calendars