Shiva Puja in Hinduism is the way by which one worships Shiva through traditional and ancient rites with the use of mantra, tantra, yantra, kriyas, mudras, and abhishekam. From Wikipedia
The new-moon tithi began at 2:28 AM today, prompting ritual offerings to ancestors, community tree planting, preparations for the Guru Pushya Yoga at 4:43 PM.