While the birth-chart is constant,
the planets are in motion and these bring about changes in our lives; which is why life is never static or stationary. This change is governed by Time. Time, arguably the most powerful force in the Universe, is dynamic. Movement of planets is governed by Time and since the Transit of planets influence all aspects of life, our life is also governed by time. And Time has a quality.
The five attributes that define the quality of time are "Vaar", "Tithi", "Nakshatra", "Yog" and "Karan". Days are classified as excellent, auspicious, good, ordinary, not conducive, avoidable, inauspicious. Days are further classified as being suitable or auspicious for marriage, engagement, moving into a new house, naming your baby, etc. This is general time.
The other component of time is dependent on placement of planets at birth (individual horoscope), planets in transit and Dashas.
Vedic Astrology recommends that both the variables be supportive at the time of starting a new venture, marriage, purchase of property, or any important event. So take the help of this ancient wisdom in Vedic Astrology for an auspicious start as "A thing well begun is half-done".