732
α=90°‐42,66°+23,44°=70,78°
β=90°‐42,66°‐23,44°=23,9°
fromwhich:
tqα=2,88
tgβ=0,44
Having measured length OA = 4.2 cm on the
labyrinth,usingtheformula(6)wedefinethelength
oftheOHindex:
ОН=АО×tgα=4.2×2.88≈12cm.
Based on the properties of a right triangle and
astronomical data, if the
measured length of the
shadowOGisequaltothelengthOGdefinedbythe
formula (7), we can say that the labyrinth could be
usedasasolarcalendarthatdefinesthedays ofthe
solstices.
According to the formula (6) we calculate: OG =
OH/tgβ=12
/0.44=27.27cm,whichisequaltothe
measureditem.
2.5 Acomparisonwithethnographicdata
Acomparisonwithethnographicdatashowsthatthe
intersection of the date of the midday shadow
semicircles corresponds to the folk calendar and
sheep production cycle of Ossetian herdsmen.Thus,
theintersection
ofamiddayshadetolinethehelixat
pointDprovidesday21ofFebruary,whichisthebest
forthestartoflambingsheepandgoatsintheclimatic
conditions of the mountain Ossetia. Lambs born
during these dates by the beginning of the grazing
season(firstdecadeof
May)reachtheagewhenthey
can eat green fodder using pastures in full.
Accordingly,bytheautumnlambsaregrowingwell,
itgivessufficientwoolclip,fullandmeatcarcassand
leftintherace–entersintohibernationmorerobust
and large (Nikolaev, 1973). Lambs born at an
inopportune time, are certainly subject to slaughter
forskins–krimmer.Theoptimalstartdateofmating
sheep and goats – 23 September. This day noon
shadow of the pointer intersects the semicircle at
point C. Usingthis date for mating, lambing canbe
obtained during the most favorable for the
preservation of offspring and maximize production
fromthesheep‐themainoccupationoftheCaucasus
mountaineers since the Neolithic era. Calendar
labyrinth yields and other important dates: the
beginning of shearing (Falvara) and the transition
fromgrazingonstabling(Dzhiorguba).
Differentsegments of thelength of time between
the arcs
of the labyrinth is consistent with the
descriptions of the Ossetian calendar. So, at the
beginning of the XIX century, Julius Klaproth
describedthecalendarofOssetians‐Digors, consisting
of ten months in which there wereʺtwin monthsʺ ‐
ʺMaruja Dua Maiʺ andʺRuh dua maiʺ (two months
Marujaandtwo
monthsRukh)(Kaloev,1967,p.163).
Later, in 1882, V.F. Miller, inʺOssetian etudesʺ
showed calendar of Ossetians‐Digors, where the
duration of the monthʺKomahsanʺ was determined
fromthemiddletotheendofJanuaryandthemonth
ʺGeuargobaʺfollowedbyunnamedperiodcontinued
forabouttwoweeks(Miller,
1882,p.263‐264).Thus,
intheOssetiancalendarmonthswerenot30‐31days
long,but14‐15and59‐60days–multipleofthemoon
phases.CalculationsofcalendardatesforMahcheskiy
labyrinth and their comparison with ethnographic
datashowthatthelabyrinthcouldbeusedasa
solar
calendar up to the XVIII‐XIX centuries (Hetagurov,
2016).
3 DISCUSSIONOFRESULTS
3.1 Labyrinths–solarcalendarsinEasternandSouthern
Europe
Calendar function was proved for Mastischenskiy
labyrinth, found by archaeologists of the Voronezh
State University during the excavation of a Bronze
Age settlement on the high
chalk headland (60 m
abovethe waterlevel in theriver Don) betweenthe
villages Divnogorie and Kostenko. Azimuth
measured from the center of the labyrinth mound,
throughestablishedthereingraniteslabs,corresponds
tothedirectionsofsunrise/sunsetinthedaysofthe
equinoxes and solstices (Chekmenev, 2001). We
calculated the height of the gnomon using the
formula(1)as3.5m(2primariesfathoms)(Paranina,
2012).
CalendaruseofMogorlabyrinthcarvedonrocks
Marina (Galicia, Portugal), has been studied by
mathematicsteacherJoseLuisGalovart,whoproved
thatthecentralpointofthedrawingsattheequinoxes
binds the shadows of the objects, which were set
duringtheseequinoxdays(Historiayarqueología…).
3.2 Structureofsolarcalendars:regionalfeatures
Calculations of solar calendars structure at different
latitudes reveal the regional characteristics of solar
navigation.
Calculationsofmiddayshadelengthforthegnomon,1
mhighshowthat
theoptimumconditionsforcreating
labyrinth calendar is the temperate zone, where the
shadowthroughouttheyearcrossesallarcstwice.In
thecoldzonethepolarnightperiodisnotapplicable,
and inthe hot zone – midday shadow disappears 2
times a year (since the sun is at
its zenith), and the
shadowʺpassesʺsomeparts4times(Paranina,2010).
Bytheratiooftheheightofthegnomon(e.g.,1m)and
the length of its shadow several types of labyrinth
pattern and solar calendars can be distinguished: 1.
Typeʺankhʺ–intheconditionsofapolar
daycentral
part is highlighted as a closed ring structure
(labyrinth of Iceland) 2.ʺlabyrinth‐11ʺ in the polar
latitudes, does not have an arc for midday shade
fixinginthe wintersolstice, as thisshadow ismuch
largerthanthesizeofthelabyrinth;3.atlatitude50‐
60
°shadowsofallmonthsoftheyearareplacedina
circle of arelatively small diameter, a 7‐arcʺclassicʺ
labyrinthisa convenient here;4.atlatitudes 40‐30°
radiusoftheoutercircleistwotimeslargerthanthe
height of thegnomon – a type
of “staff”(≈ 2 m); 5.
Tropical calendar sizes shadows are placed on the