Tritiya tithi is the third day during a fortnight in Hindu calendar. The meaning of Tritiya is three or third. When the tithi falls during the shukla paksha or waxing phase of moon it is of great importance to Goddess Parvati. Worship associated with her are observed on the day.
Gauri Tritiya and various Teej including Kajari Teej and Hartalika Teej are observed on Tritiya Tithi.
Another important date observed on the day is the famous Akshaya Tritiya.