In the Gregorian calendar, New Year's Eve, also known as Old Year's Day or Saint Sylvester's Day in many countries, is the evening or the entire day of the last day of the year, 31 December. The last day of the year is commonly referred to as “New Year's Eve”. In many countries, New Year's Eve is celebrated with dancing, eating, drinking, and watching or lighting fireworks. Some Christians attend a watchnight service. The celebrations generally go on past midnight into New Year's Day, 1 January.
The Line Islands (part of Kiribati), Samoa and Tonga, in the Pacific Ocean, are the first places to welcome the New Year, while American Samoa, Baker Island and Howland Island (part of the United States Minor Outlying Islands) are among the last.
In Algeria, New Year's Eve (Réveillon; Ra’s al-‘Ām) is usually celebrated with family and friends. In the largest cities, such as Algiers, Constantine, Annaba, Oran, Sétif, and Béjaïa, there are large celebrations which may feature concerts, late-night partying, firecrackers, fireworks at midnight and sparklers and shouts of "Bonne année !". The Martyrs' Memorial and the Grand-Post Place in Algiers are the main attraction for the majority of Algerians during the celebration, while some others prefer spending this special night outside the country, generally in Tunis or Paris.
At , the President's message of greetings to Algerians is read on TV. The EPTV network airs a yearly New Year's Eve entertainment show, variying its name, hosts and guests, which features sketches and musical performances. Popular films are also broadcast. At home or at restaurants, a special type of pastry cake called "la bûche" is eaten, and black coffee or soda is often drunk with it. People eat it a few minutes before the New Year's countdown.
On New Year's Day (le jour de l'an), Algerians, especially children, write their "New Year's letter" on decorated paper, called "Carte de bonne année", to their parents and relatives, featuring their resolutions and wishes.