VMs: Lunar Hijra in Iran

[Vladimir Sazonov <vladimir@xxxxxxxx>]

f67r2 maybe is a key.
You see a sequence of black and white moons, normally black-white-black-white
but one time is black-black-white-white.
Actually all the calendar system have a very strong month length sequence:
31-28-31-30-31-30-31-31-30-31-39-31 in the west
29-30-29-30-29-30- always in arabic countries official moslem calendar.

The picture 29-30-29-30-29-29-30-30-29-30-29-30 having double-long
month and double-short month is possible in ONLY ONE calendar system -
in persian lunar hijra, having also about 254 days in a year and flexible
length of the month.
Lunar Hujra in Iran has flexible length of monthes.  I do not know the lunar
hijra rules and the distribution for 16 century, but for example the year
1860 (iranian 1276) has the same distribution.
Such picture is not very often but possible.

Vladimir Sazonov, Berlin
http://voynich.naobum.de