The ancient Bulgarian calendar is based on observations of Jupiter (Yankul) and the Sun. Under the ancient Bulgarian calendar system, the year had 364 counted days and 1 uncounted day, totalizing 365 days. Every four years, an extra day was inserted and corresponded to the summer solstice. The year was divided in 4 quarters, 52 weeks and 13 months, of which the 13th consists of only 1 day (New Year's Day) and it corresponded to the winter solstice.

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  • The ancient Bulgarian calendar is based on observations of Jupiter (Yankul) and the Sun. Under the ancient Bulgarian calendar system, the year had 364 counted days and 1 uncounted day, totalizing 365 days. Every four years, an extra day was inserted and corresponded to the summer solstice. The year was divided in 4 quarters, 52 weeks and 13 months, of which the 13th consists of only 1 day (New Year's Day) and it corresponded to the winter solstice. Therefore, every year, the same date always falls on the same day of the week. The calendar was a circle composed by twelve constellations, named after real or mythological animals, and it was used to follow the movement of the sun but most of all of Jupiter . In the ancient Bulgarian chronology, there are periods of 3, 10, 12, 17, 19, 21, 30, 47, 50, 53, 300, 600, 4332, etc. ancient Bulgarian years that are used both as denominators and intervals of time. The longest one is of 6328 ancient Bulgarian years. It is mentioned in the fragmentary inscription of Khan Omurtag and refers to the year 823 AD. The text consists of 14 lines, probably the concluding part of a contract between Danube Bulgaria and the Eastern Roman Empire. The inscription is carved with beautiful letters on a marble stone most probably from the capital town of Pliska. Here is what it reads: “[…of the ruler] the name is [Khan Omurtag Juvigi]. The year of the appearance of the true god was 6328. They made a sacrifice and they swore in the written in the books [mutual contracts]…” This historic source may be accepted as a proof of the early beginning of the chronology of the Bulgarian calendar. According to the counts of the famous Bulgarian historian Professor Vassil Zlatarski the beginning is the year 5505 BC. Therefore, we can calculate that the year, 2001 AD, is the year 7506 of the ancient Bulgarian chronology. Thus, the Bulgarians are the people with the most ancient system of measuring time – a fact, which indicates their early civilizing force.
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  • August 2008
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  • April 2008
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  • June 2009
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  • May 2008
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  • June 2008
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  • The ancient Bulgarian calendar is based on observations of Jupiter (Yankul) and the Sun. Under the ancient Bulgarian calendar system, the year had 364 counted days and 1 uncounted day, totalizing 365 days. Every four years, an extra day was inserted and corresponded to the summer solstice. The year was divided in 4 quarters, 52 weeks and 13 months, of which the 13th consists of only 1 day (New Year's Day) and it corresponded to the winter solstice.
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  • Ancient Bulgarian calendar
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