Guru Purnima or Vyasa Poornima is observed on full moon day in the month of Ashadha (Ashara or Ashadh). This year it falls on 7th July 2009 with a Penumbral Lunar Eclipse.The full moon will be in Poorvashadha nakshatra ruled by Venus in zodiac sign Sagittarius ruled by Jupiter and Sun in Gemini ruled by Mercury.The planetary positions at the time of the Lunar Eclipse are shown in the table.
The path of visibility of the eclipse is shown in the figure. It is not seen in India. It is an auspicious day according to Vedic Astrology in honor of Vyasa the greatest compiler of Vedic texts. It is a day to recognize the role of teacher, Guru, the Dispeller of darkness, the illuminator of Knowledge.
Here are some answers to the query: who is Guru in sanskrit? ‘Gu’ stands for Gunatheeta (attributeless). ‘Ru’ signifies Rupavarjita (formless). There is another interpretation for the word Guru. ‘Gu’ signifies darkness and ‘Ru’ denotes that which dispels darkness. (Gukaaro Andhakaarasya, Rukarasthannirodhakaha). So, God, who is attributeless and formless, is the true Guru.