Is there no compatibility between your sister and you, right from the time of birth? You both just don’t see eye to eye on anything. To know why, enter your birth details into a moon sign calculator to know your moon sign and personalities. You can then go into details, by consulting Dr. Vinay Bajrangi, the most respected astrologer, to sort out the compatibility issues in case you are unable to gather the details by reading the free horoscope. Contact Dr, Vinay Bajrangi at the earliest.