Planetary hours are a system of dividing the day into 24 equal parts, each of which is associated with a different planet. This system is used in electional astrology to determine the most auspicious times for various activities.

An electional chart is a chart that is cast for a specific moment in time, usually the moment when an event is scheduled to take place. The chart is then used to determine the most auspicious times for the event.

The mathematical formula used to calculate the planetary hours is $$H = (12 + L + D + W) % 24$$, where H is the planetary hour, L is the local mean time, D is the day of the week (0 for Sunday, 1 for Monday, ..., 6 for Saturday), and W is the week number (0 for the first week of the year, 1 for the second week, ..., 51 or 52 for the last week of the year).

Electional astrology is the branch of astrology that deals with the mathematical calculation of the most auspicious time for an event. This calculation is based on the positions of the planets and other celestial bodies at the time of the event.

The most important factor to consider when choosing an auspicious time for an event is the position of the Moon. The Moon is the fastest moving planet and its position changes rapidly. This means that the Moon's influence on an event can change significantly over a short period of time.

Synastry is the branch of astrology that deals with the mathematical calculation of the compatibility of two people. This calculation is based on the positions of the planets and other celestial bodies in the birth charts of the two people.

The most important factor to consider when determining the compatibility of two people is the position of the Moon. The Moon represents the emotions and the subconscious mind. This means that the Moon's influence on a relationship can be very significant.

Muhurta is the branch of astrology that deals with the mathematical calculation of the best time to start a new business. This calculation is based on the positions of the planets and other celestial bodies at the time of the business launch.

The most important factor to consider when choosing an auspicious time to start a new business is the position of the Ascendant. The Ascendant represents the beginning of a new cycle. This means that the Ascendant's influence on a business launch can be very significant.

Vivaha Muhurta is the branch of astrology that deals with the mathematical calculation of the best time to get married. This calculation is based on the positions of the planets and other celestial bodies at the time of the wedding ceremony.

The most important factor to consider when choosing an auspicious time to get married is the position of the Moon. The Moon represents the emotions and the subconscious mind. This means that the Moon's influence on a marriage can be very significant.

Yatra Muhurta is the branch of astrology that deals with the mathematical calculation of the best time to travel. This calculation is based on the positions of the planets and other celestial bodies at the time of the journey.

The most important factor to consider when choosing an auspicious time to travel is the position of the Moon. The Moon represents the emotions and the subconscious mind. This means that the Moon's influence on a journey can be very significant.

Griha Pravesh Muhurta is the branch of astrology that deals with the mathematical calculation of the best time to buy a house. This calculation is based on the positions of the planets and other celestial bodies at the time of the house purchase.

The most important factor to consider when choosing an auspicious time to buy a house is the position of the Ascendant. The Ascendant represents the beginning of a new cycle. This means that the Ascendant's influence on a house purchase can be very significant.