Gudi Padwa
Gudhi Padwa (Marathi: गुढी पाडवा, often mis-pronounced as guDi padwa because ढी sounds like डी when spoken), is the Marathi name for Chaitra Shukla Pratipada. It is celebrated on the first day of the Chaitra month to mark the beginning of the New year according to the lunisolar Hindu calendar. This day is also the first day of Chaitra Navratri and Ghatasthapana also known as Kalash Sthapana is done on this day.
The word पाडवा(pāḍavā) or पाडवो(pāḍavo) comes from the Prakrit word पड्ड्वा/पाड्ड्वो(pāḍḍavā/pāḍḍavo), which stands for the first day of the bright phase of the moon called प्रतिपदा (pratipadā) in Sanskrit.
In the south of India, first day of the bright phase of the moon is called pāḍya(Tamil: பாட்ய or பாட்டமி, Kannada: ಪಾಡ್ಯ, Telugu: పాడ్యమి, paadyami,Konkani: पाड्यॆ). Konkani Hindus variously refer to the day as संसर पाडवो or संसर पाड्यॆ (saṁsāra 'pāḍavo/ saṁsāra pāḍye),संसार (saṁsāra) being a corruption of the word संवत्सर (saṁvatsara). Konkani Hindus in Karnataka also refer to it as उगादि (ugādi).
Read more about Gudi Padwa: Gudhi Padwa in Other Languages, States and People, Etymology, The Gudhi, Festivities