Talking in a strict scientific sense, all things in this Universe are finite, all except two. Time and Space. Time had no beginning and is going to have no end. That means that there was no point, no instance at which we can say that time came into existence, or time started. And in the same way, we can not say that at such and such instance, time is going to exist no more, or its going to stop running. Similarly, space has no dimensions. It doesn't start anywhere and doesn't end anywhere. The modern man has always tried to understand both the elements and travel at will in them but has found almost no success so far.
There are innumerable influences cast by both these elements on man. They effect the human life significantly. And the ancient sages understood this only too well. And through the powers of the mind and soul, through concentration and meditation, through various super-conscious and sub-conscious energies and powers, through super-human intellect and divine bliss, they understood all these factors beyond the reach of any modern day technology. They saw and understood, how time and space influence us, how stars and planets in the sky effect us and how significantly they can change a man's course of life .
And they understood the most important thing too. That is, how man can change the course of his own future and lead an amazingly superb and successful life by working in alliance with the stellar bodies. And, Muhurta is the most important concept they discovered.
Muhurta is the selection of the best date and time for performing any work. It helps in concentrating the energy of the planets and other astrological factors in an auspicious way so as to nullify the evil influences and make the result of the work performed most fruitful. It helps in counteracting the obstructions provided by the birth chart of a person and to neutralize or overcome the loss mentioned therein.
It synchronizes the energy of the person, the stars and the event itself so as to make it utmost advantageous to the person performing the work.
So, whenever you are going in for some important consideration of your life, which either takes a significant amount of your time and energy or is going to make its impact on your life for quite sometime, then you should perform that action in accordance to the Muhurta, so that it can be of utmost advantage to you and you can lead a much better, happier, satisfactory and gratified life.
In astrology, the starting time of an event is taken for the calculation of the horoscope and making the interpretations. So, the starting or the beginning time is the most important factor. The future and the life events of a person depend on what time he was born. But, the irony is that it is not under the control of the person as to at what time he wants to be born. But the other things that he performs in his lifetime are under his control. He can choose the time of his performing any work. And that is what Muhurta is. If the beginning time of the work is auspicious, then the result of the action will be very fruitful and as desired.