science

Mongolian calendar

Mongolian calendar is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mongolian calendar rather than just read about it. In short: The Mongolian calendar may refer to a number of different lunisolar calendars related to the Chinese and Tibetan calendars. These calendars (Mongolian: цаглабар, romanized: tsaglabar or цаг тооны бичиг, tsag toony bichig) have largely been replaced in day-to-day use with the Gregorian calendar (Аргын тоолол, Argyn toolol, 'chronology of method'), however the traditional calendar (Билгийн тоолол, Bilgiin toolol, 'chr…

Key takeaways

Mongolian calendar belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mongolian calendar to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mongolian calendar from memory before moving on to harder problems.

Reference excerpt

The Mongolian calendar may refer to a number of different lunisolar calendars related to the Chinese and Tibetan calendars. These calendars (Mongolian: цаглабар, romanized: tsaglabar or цаг тооны бичиг, tsag toony bichig) have largely been replaced in day-to-day use with the Gregorian calendar (Аргын тоолол, Argyn toolol, 'chronology of method'), however the traditional calendar (Билгийн тоолол, Bilgiin toolol, 'chronology of wisdom') is still used for a variety of traditions such as the date of festivals like Tsagaan Sar (the Mongolian new year), horoscopy, and zodiac signs. The traditional calendar as used in Mongolia today is a lunisolar calendar based on Tegus Buyantu zurkhai system developed in 1747 by monk Ishbaljir (Сүмбэ хамбо Ишбалжир, Sümbe khambo Ishbaljir; 1704–1788). The year is composed of either 12 or 13 lunar months, each beginning and ending with a new moon. A thirteenth month is added every two or three years, so that an average year is equal to the solar year. The Mongol traditional new year celebration is Tsagaan Sar which is celebrated at the second new moon following the winter solstice.

Argyn toolol

Months The twelve months of the year are referred to by their number, such as first month, second month, and so on.

Days of the week In colloquial usage, the first 5 days of the week are referred to as first day, second day, etc. Saturday is referred to as Хагас сайн өдөр (Khagas sain ödör, "half-good day"), and Sunday is referred to as Бүтэн сайн өдөр (Büten sain ödör, "full good day"); a result of 5 full working days and Saturday as a half working day during the communist era. The names of Tibetan origin are used in more formal settings, and almost exclusively in written documents, while the Sanskrit names are practically absent in modern usage.

Worked examples

Example 1 — a first encounter with Mongolian calendar

Start with the simplest possible case. Write down what Mongolian calendar claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mongolian calendar before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mongolian calendar ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mongolian calendar

In research: Mongolian calendar appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Mongolian calendar in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Mongolian calendar is common in secondary-school and first-year university syllabi. It links to neighbouring topics Calendars, Culture of Mongolia, so understanding it makes those chapters shorter.
In everyday life: Look for Mongolian calendar outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Mongolian calendar in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mongolian calendar means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Mongolian calendar out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mongolian calendar in simple terms?

Why does Mongolian calendar matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mongolian calendar?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mongolian calendar.