If two brothers of same family get married in two dates and two places in the same samvatsara (an year in Hindu calendar), will this be auspicious or unauspicious ? If it's unauspicious, what is the solution ?
There is a general belief in Hinduism that we should give some gap between marriage of one member to another member in the same family. This also has a scriptural basis.
I could not find anything related to brothers marriage in same family but the general rule of giving a gap should be maintained. ( Bold emphasis mine)
From Narada Purana chapter 56 which talks about general astrology.
- Prohibitions in marriage : A daughter's marriage should not be conducted for three seasons after a son's marriage, neither should be sacrament (for the change to married life, vrata). When there has been an auspicious event, there shall not be another auspicious event closely following.
So it is recommended to maintain a gap between two auspicious events like marriages and other sacraments.
For more detail, it's recommended to consult a knowledgeable astrologer for next muhurta and conduct marriage.