Panchang is a set of five things like the name itself suggests, five-limbs or panch-ang. These five things direct Hindus in determining the best date and time to perform a certain activity or a ritual. Let us have a brief look at these five things namely, tithi, vara, nakshatra, yog and karan. The tithi is a lunar day based on the relationship between the sun and the moon, it is an angular relationship of 12 degrees. Similarly, yoga is the angular relationship between the sun and the moon with 13 degrees of difference. There are a total of 27 yogas. Vara is a solar weekday, there are a total of 7 solar days. The karan is the half of a tithi, meaning 6 degrees difference between moon and sun.