The auspicious festival of Hariyali Amavasya will fall on July 17. Since this day falls in the Shravan month which is also the beginning of the rainy season which covers the earth with a blanket of green, that is why it is known as festival of greenery or Hariyali Amavasya. On this day apart from worshipping Lord Shiva several plants and trees are also worshipped. On this day Sun God will enter the Cancer zodiac. , Spirituality News, Times Now