Akshaya Tritiya is one of the most important days in Hindu calendar. It is observed on Shukla Paksha Tritiya i.e. the third day during bright half of Vaishakha lunar month in Hindu calendar. According to Hindu scriptures and Purana(s), Satya Yuga ended and Treta Yuga began on the day of Akshaya Tritiya. Hence, Akshaya Tritiya is Yugadi Tithi and the day has great religious significance for most Hindu families.
Lord Vishnu, being the preserver of whole creation, is worshipped on Akshaya Tritiya which is a Yugadi Tithi. As the day has been blessed by Lord Vishnu, the day is considered very significant to worship and please Lakshminarayana form of Lord Vishnu. Lakshminarayana is the manifestation of Lord Vishnu in which Lord Vishnu is worshipped along with His consort Goddess Lakshmi. Devotees of Lord Vishnu observe a day long fast on the significant day of Akshaya Tritiya. As per Vratraj, on the day of Akshaya Tritiya Lord Vishnu along with Goddess Lakshmi should be worshipped ritualistically with all necessary Puja steps including flowers, Dhoop and various ointments.
The day of Akshaya Tritiya is also given special significance in Vedic Astrology. It is believed that the day doesn't need any Muhurat to start any auspicious work. Many Mangalika (माङ्गलिक) work e.g. marriage ceremony, house warming ceremony, purchasing of new clothes and jewelry, purchasing property, buying new vehicle and motor bike etc. are performed on Akshaya Tritiya day.
As per Hindu time keeping, the time has been divided into four Yuga. All four Yuga are cyclic and these are known as Satya Yuga, Treta Yuga, Dwapar Yuga and Kali Yuga respectively. Akshaya Tritiya is the day when Satya Yuga i.e. the golden period of human life got over and Treta Yuga got started. Hence the origin of Akshaya Tritiya is deep rooted in Hinduism and it dates back to the creation of human life on the earth. Hence Akshaya Tritiya is one of the four Yugadi Tithi in Hinduism.
The word Akshaya (अक्षय) means never diminishing. Hence the benefits of doing any Japa, Yajna, Pitra-Tarpan, Dan-Punya i.e. charity works, Svadhyaya i.e. studying of Vedas and Puja on this day never diminish and remain with the person forever.
Hence, to take the maximum benefit of the day, many Hindus take bath in the sacred water at various holy places. Not only on Akshaya Tritiya day, many devotees take pledge to take daily holy bath during the whole month of Vaishakha. To appease their deceased ancestors, Hindu families also perform Tarpan with the water and sesame seeds on the auspicious day of Akshaya Tritiya.
It is believed that performing Hawan gives maximum benefits and people perform Homa preferably with Yava i.e. barley seeds and Akshata i.e. unbroken rice on the significant day of Akshaya Tritiya.
Lakshminarayana i.e. Lord Vishnu along with His consort Goddess Lakshmi is worshipped on the day of Akshaya Tritiya.
The day is also coincides with the birth anniversary of Lord Parashurama which is popularly known as Parashurama Jayanti. Lord Parashurama was the sixth incarnation of Lord Vishnu. Hence, devotees of Lord Vishnu and Brahmin communities worship Lord Parashurama on Akshaya Tritiya day.
As per Amanta as well as Purnimanta Hindu Calendar -
Shukla Paksha Tritiya (3rd day) of Vaishakha (2nd month)
Akshaya Tritiya is observed throughout India. Apart from Hindu religion it is also observed in Jain religion.