Notes: All timings are represented in 12-hour notation in local time of Ashburn, United States with DST adjustment (if applicable).
Hours which are past midnight are suffixed with next day date. In Panchang day starts and ends with sunrise.
Kartik is the eighth lunar month in Hindu calendar. The full moon day during the month of Kartik is known as Kartik Purnima. Depending on people and the region, the full moon day in Hindu calendar is also referred as Poornima, Poonam, Pournami and Pournimasi. In Vaishnava tradition Kartik month is known as Damodara month. Damodara is one of the names of Lord Krishna.
In Hindu calendar, Kartik is the holiest month among all lunar months. Many people take pledge to take holy dip before sunrise in Ganges and other holy rivers every day during the month of Kartik. The ritual of holy dip during Kartik month begins on the day of Sharad Purnima and ends on Kartik Purnima.
Kartik Purnima is also very significant as many rituals and festivals culminate on the day of Kartik Purnima. The festivities of Kartika Purnima begin on the day of Prabodhini Ekadashi. Ekadashi is the eleventh day and Purnima is the fifteenth day of Kartika month during Shukla Paksha. Hence Kartik Purnima festivities last for five days.
Tulasi-Vivah Utsav which begins on the day of Prabodhini Ekadashi culminates on the day of Kartik Purnima. As per religious books, Tulasi Vivah can be performed on any suitable day between Ekadashi to Purnima in the month of Kartik. However, many people choose the day of Kartik Purnima to perform marriage rituals of Goddess Tulasi and Lord Shaligram, an iconic representation of Lord Vishnu.
Bhishma Panchaka fasting which begins on Ekadashi day ends on the day of Kartik Purnima. In Vaishnava tradition, the utmost importance is given to Bhishma Panchaka fasting during the last five days of Kartik month. The five days fasting is known as Bhishma Panchaka as well as Vishnu Panchaka.
Vaikuntha Chaturdashi fasting and Puja is performed on Chaturdashi Tithi i.e. one day before Kartik Purnima. It is believed that Lord Vishnu worshipped Lord Shiva on the day of Kartik Chaturdashi during Shukla Paksha and offered Him one thousand lotus flowers. Many Shiva temples organize special Puja during which Lord Vishnu is worshipped along with Lord Shiva. On the day of Vaikuntha Chaturdashi, a holy dip in Ganges before Sunrise at Manikarnika Ghat in Varanasi is considered very significant among devotees of Lord Shiva.
Dev Diwali which is also known as Diwali of Gods is celebrated on the day of Kartik Purnima. It is believed that Lord Shiva killed demon Tripurasura on the day of Kartik Purnima. Hence Kartik Purnima is also known as Tripuri Purnima and Tripurari Purnima. As per legends of Tripuri Purnima, Tripurasura defeated Gods and started ruling their kingdom. When Tripurasura was killed, Gods were overjoyed and celebrated the day of Kartik Purnima as the day of illuminations. Hence thousands of earthen lamps are lit at all temples as well as at the bank of river Ganga on the day of Kartik Purnima.