Runic calendar
Special days like solstices, equinoxes, and celebrations (including Christian holidays and feasts) were marked with additional lines of symbols.On another line, many of the days were marked with one of 19 symbols representing the 19 Golden numbers, for the years of the Metonic cycle.Because this system needed 19 runes to represent the 19 golden numbers which stood for the 19 years of the perpetual calendar's cycle, the Younger Futhark was insufficient, having only 16 characters.In 1636, Ole Worm documented the Younger Futhark numeral system, including these three characters, in his Runir seu Danica literatura antiquissima (Runes: the oldest Danish literature).[1] A version using the Latin alphabet for weekdays and Arabic numerals for the golden numbers was printed in 1498 as part of the Breviarium Scarense.
Saaremaaperpetual calendarsolsticesequinoxesChristianfeastsparchmentMiddle AgesNyköpingSwedenYounger FutharkweekdayGolden numbersMetonic cyclePentadic numeralsOle WormLatin alphabetArabic numeralswas printedHallingdalcoat of arms of NorwayNorwegianNational Museum of DenmarkEstonianMaausksamizdatSovietComputus RunicusGermanic calendarList of runestonesNationalencyklopedinScythe swordDominical letterWorm, OleCalendarsLunisolarAstronomicalBuddhistChineseEthiopianGregorianLunar HijriSolar HijriUnix timeArmenianAssamese (Bhāshkarābda)AssyrianBaháʼíPawukonBengaliBangladeshiBerberBoranaBurmeseEarthly BranchesHeavenly StemsMinguoSolar termGermanic heathenGeorgianHebrewVikram SamvatIranianJalaliZoroastrianIslamicTabularJapaneseJavaneseKoreanKurdishLithuanianMaithiliMalayalamMandaeanManipuri (Meitei)MelanauMizo (Lushai)MongolianNepal SambatYele SambatPunjabiNanakshahiRomanianSomaliSesothoSlavicSlavic Native FaithMacedonianTibetanTripuriVietnameseYorubaMesoamericanLong CountCalendar roundCopticEthiopian and EritreanJulianRevisedLiturgical yearEastern OrthodoxSaintsArabianTōnalpōhualliXiuhpōhualliBabylonianBulgarByzantineCappadocianCelticCulāsakarajColignyEgyptianFlorentineFrench RepublicanGermanicHaabʼTzolkʼinMuiscaPentecontadQumranRapa NuiSexagenarySwedishTurkmen