Guru Peyarchi is associated with astrology especially in Tamil Nadu and is the transition of planet Guru or Jupiter. Horoscope predictions or Guru Peyarchi palangal are widely popular with Tamilians. In 2012, Guru Peyarchi date is May 17. Guru or Jupiter will move Mesha Rashi on this day and will remain there for next 12 months.
Guru, or Jupiter, is considered a highly favorable graha or planet in Hindu astrology and it is believed to bring luck and prosperity.
Those people with weak position of Jupiter in their horoscope might face some hard times.