Thus, the sidereal month must have been divided into three parts.

It takes a sidereal month to complete its cycle rather than the year long trek of the Sun.

As a result, the time it takes the moon to return to the same node is shorter than a sidereal month.

Unlike the sidereal month, it can be measured precisely.

The sidereal month is the time it takes to make one complete orbit with respect to the fixed stars, which is about 27.3 days.

The nine nights divided nicely into a sidereal month of 27 nights.

This is known as the sidereal month.

The calendar recognizes two types of months: synodic month and sidereal month.

After completing a sidereal month the Moon must move a little further to reach the new position having the same angular distance from the Sun.

This regression means that the time between each passage of the Moon through the ascending node is slightly shorter than the sidereal month.

The time between one perigee and the next is slightly longer than the sidereal month and known as the anomalistic month.

As a result of the slow precession of the lunar orbit, these latter three periods are only slightly different from the sidereal month.

It is also the period (with respect to the stars) of its revolu- tion about the Earth, so it is almost invariably called the "sidereal month."

After one nodal precession period, the number of draconic months exceeds the number of sidereal months by exactly one.

In order to reconcile the sidereal months of Hindu calendar with Metonic cycle's solar years, the calendar inserts intercalary months and days on some schedule.

From the several days' observation which we had at close range we came to the conclusion that the entire life span of this vegetation is encompassed in a single sidereal month.

The sidereal month is defined as the Moon's orbital period in a non-rotating frame of reference (which on average is equal to its rotation period in the same frame).

A draconic month is shorter than a sidereal month because the nodes move in the opposite direction as the Moon is orbiting the Earth, one revolution in 18 years.

This apsidal precession completes one rotation in the same time as the number of sidereal months exceeds the number of anomalistic months by exactly one, after about 3233 days (8.85 years).

A synodic month is longer than a sidereal month because the Earth-Moon system is orbiting the Sun in the same direction as the Moon is orbiting the Earth.

The four-inch rises, Dr. Williams said in an interview, occur in 27-day cycles - the time it takes the Moon to make one full orbit of Earth, known as the sidereal month.

The number of nakshatras reflects the number of days in a sidereal month (modern value: 27.32 days), that the width of a nakshatra is traversed by the moon in about one day.

In one sidereal month, the Moon moves about 1/1 .1 of the length of its orbit about the Sun, and to an observer on the Sun the change in angle of viewpoint is consider- able.

They can be considered as the equivalent to the zodiacal constellations in the Western astronomy, though the Twenty-eight Mansions reflect the movement of the Moon through a sidereal month rather than the Sun in a solar year.

However, during one sidereal month, Earth has revolved part way around the Sun, making the average time between one new moon and the next longer than the sidereal month: it is approximately 29.5 days.