Christmas or Christmas Day is an annual Christian holiday commemorating the birth of Jesus Christ. It is celebrated on December 25, but this date is not known to be Jesus' actual birthday, and may have initially been chosen to correspond with either the day exactly nine months after some early Christians believed Jesus had been conceived, a historical Roman festival, or the date of the northern hemisphere's winter solstice. Christmas is central to the Christmas and holiday season, and in Christianity marks the beginning of the larger season of Christmastide, which lasts twelve days

Epiphany (from Koine Greek (ἡ) ἐπιφάνεια, epiphaneia "appearance", "manifestation") is a Christian feast day that celebrates the revelation of God made Man in the person of Jesus Christ. It falls on 6 January or, in many countries, on the Sunday that falls between 2 January and 8 January. Since the Julian Calendar, which is followed by some Eastern Churches, is at present 13 days behind the Gregorian Calendar and the revised Julian Calendar, 6 January in that calendar corresponds at present to 19 January in what is the official civil calendar in most countries. On this feast, Western Christians commemorate principally the visitation of the Biblical Magi to the Baby Jesus, i.e., his manifestation to the Gentiles; Eastern Christians commemorate the baptism of Jesus in the Jordan River, seen as his manifestation to the world as the Son of God. It is also called Theophany, especially by Eastern Christians.

1 March 1896, between the forces of General Oreste Baratieri, Italian governor of Eritrea, and Menelik II, Emperor of Ethiopia.

Eid ul-Fitr (Arabic: عيد الفطر ‘Īdu l-Fiṭr‎), often abbreviated to Eid, is a Muslim holiday that marks the end of Ramadan, the Islamic holy month of fasting. Eid is an Arabic word meaning "festivity", while Fiṭr means "to break fast"; and so the holiday symbolizes the breaking of the fasting period. It is celebrated after the end of the Islamic month of Ramadan, on the first day of Shawwal. Eid ul-Fitr lasts for three days of celebration and is sometimes also known as the "Smaller Eid" (Arabic: العيد الصغير al-‘īdu ṣ-ṣaghīr‎) as compared to the Eid ul-Adha that lasts four days and is called the "Greater Eid" (Arabic: العيد الكبير al-‘īdu l-kabīr‎). Muslims are commanded by the Quran to complete their fast on the last day of Ramadan and then recite the Takbir all throughout the period of Eid.

Good Friday, also called Holy Friday, Black Friday, or Great Friday, is a holiday observed primarily by adherents to Christianity commemorating the crucifixion of Jesus and his death at Calvary. The holiday is observed during Holy Week as part of the Paschal Triduum on the Friday preceding Easter Sunday, and often coincides with the Jewish observance of Passover. Based on the scriptural details of the Sanhedrin Trial of Jesus, the Crucifixion of Jesus was most probably on a Friday. The estimated year of Good Friday is AD 33, by two different groups, and originally as AD 34 by Isaac Newton via the differences between the Biblical and Julian calendars and the crescent of the moon. A third method, using a completely different astronomical approach based on a lunar Crucifixion darkness and eclipse model (consistent with Apostle Peter's reference to a "moon of blood" in Acts 2:20) arrives at the same date, namely Friday April 3, AD 33.

International Workers' Day (a name used interchangeably with may day) is a celebration of the social and economic achievements of the international labor movement. May Day commonly sees organized street demonstrations and street marches by millions of working people and their labour unions throughout most of the countries of the world.

Five years of Italian occupation of the capital city Addis Ababa were ended in 1941.

The Derg (Amharic:ደርግ) or Dergue was a communist military junta that came to power in Ethiopia following the ousting of Haile Selassie I. Derg, which means "committee" or "council" in Ge'ez, is the short name of the Coordinating Committee of the Armed Forces, Police, and Territorial Army, a committee of military officers which ruled the country from 1974 until 1987.

Eid al-Adha (Arabic: عيد الأضحى‎ ‘Īdu l-’Aḍḥā) "Festival of Sacrifice" or "Greater Eid" is an important religious holiday celebrated by Muslims worldwide to commemorate the willingness of Abraham (Ibrahim) to sacrifice his son as an act of obedience to God, but instead was able to sacrifice a ram (by God's command). Eid is also about spending time with family and friends, sacrifice, and thanksgiving for being able to afford food and housing. In traditional or agrarian settings, each family would sacrifice a domestic animal, such as a sheep, goat, cow, or camel, by slaughter (though many contemporary muslims do not sacrifice an animal as part of their observance). The meat would then be divided into three equal parts to be distributed to others. The family eats one third, another third is given to other relatives, friends or neighbors, and the other third is given to the poor as a gift. Eid al-Adha is the latter of two Eid festivals celebrated by Muslims, whose basis comes from the Quran. Like Eid ul-Fitr, Eid al-Adha begins with a short prayer followed by a sermon (khuṭba). Eid al-Adha is celebrated annually on the 10th day of the month of Dhul Hijja (ذو الحجة) of the lunar Islamic calendar. The festivities last for three days or more depending on the country. Eid al-Adha celebrations start after the Hajj, the annual pilgrimage to Mecca in Saudi Arabia by Muslims worldwide, descend from Mount Arafat. The date is approximately 70 days after the end of the month of Ramadan.

In countries which use the Gregorian calendar, New Year's Day is usually celebrated on 1 January. The order of months in the Roman calendar has been January to December since King Numa Pompilius in about 700 BC, according to Plutarch and Macrobius. However, Roman writers identified years by naming the year's consuls, who did not enter office on 1 January until 153 BC. Since then 1 January has been the first day of the year, except during the Middle Ages when several other days were the first (1 March, 25 March, Easter, 1 September, 25 December). With the expansion of Western culture to the rest of the world during the twentieth century, the 1 January date became global, even in countries with their own New Year celebrations on other days (e.g., China and India). At present, the celebration of the New Year is a major event worldwide. Many large-scale events are held in major cities around the world, with many large fireworks events on New Year's Eve (31 December). Sydney launched over 80,000 fireworks at midnight, and had more than one and a half million attendees; it was also the most-watched event on television worldwide last year. In Valparaiso upwards of two million visitors witnessed the largest fireworks display in a natural setting; a total of more than 21 kilometers of fireworks on the bay, from the commercial port city of Valparaiso to Concon, Chile, all in 25 minutes of entertainment. London's New Year celebrations centre around the London Eye, with an impressive fireworks display while Big Ben strikes midnight. In New York, the celebration is focused around a large crystal ball that descends in a one minute countdown in Times Square. Edinburgh plays host to one of the world's largest Hogmanay events. The celebrations last for four days and attract visitors from around the globe to take part in street parties and attend concerts. In the culture of Latin America there are a variety of traditions and superstitions surrounding these dates as omens for the coming year. January remains a symbol of the New Year's celebration. According to the Christian tradition, 1 January coincides with the circumcision of Christ (eight days after birth), when the name of Jesus was given to him (Luke 2: 21).

Mawlid (Eid Milad an-Nabi) (Qur'anic Arabic: مَوْلِدُ آلنَبِيِّ‎ mawlidu n-nabiyyi, “Birth of the Prophet” Standard Arabic: مولد النبي mawlid an-nabī, sometimes simply called in colloquial Arabic مولد , mawlid, múlid, mulud, milad among other vernacular pronunciations) is a term used to refer to the observance of the birthday of the Islamic prophet Muhammad which occurs in Rabi' al-awwal, the third month in the Islamic calendar. The term Mawlid is also used in some parts of the world, such as Egypt, as a generic term for the birthday celebrations of other historical religious figures such as Sufi saints. Where Mawlid is celebrated in a carnival manner, large street processions are held and homes or mosques are decorated. Charity and food is distributed, and stories about the life of Muhammad are narrated with recitation of poetry by children. Scholars and poets celebrate by reciting Qaṣīda al-Burda Sharif, the famous poem by 13th century Arabic Sufi Busiri. Mawlid is celebrated in most Muslim countries, and in other countries where Muslims have a presence, such as India, Britain, and Canada. Saudi Arabia is the only Muslim country where Mawlid is not an official public holiday. Participation in the ritual celebration of popular Islamic holidays is seen as an expression of the Islamic revival. Among non-Muslim countries, India is noted for its Mawlid festivities. The relics of Muhammed are displayed after the morning prayers in the Indian states of Jammu and Kashmir at Hazratbal shrine, on the outskirts of Srinagar. Shab-khawani night-long prayers held at the Hazratbal shrine are attended by thousands. During Pakistan's Mawlid celebration, the national flag is hoisted on all public buildings, and a 31 gun salute in the federal capital and a 21 gun salute at the provincial headquarters are fired at dawn. The cinemas shows religious rather than secular films on 11th and 12th Rabi-ul-Awwal.

Meskel (Ge'ez: መሰቀል), in the Ethiopian Orthodox and Eritrean Orthodox Churches, is an annual religious holiday commemorating the discovery of the True Cross by Queen Helena (Saint Helena) in the fourth century. Meskel occurs on 17 Meskerem in the Ethiopian calendar (September 27, Gregorian calendar, or September 28 in leap years). "Meskel" (or "Meskal" or "Mesqel", there are various ways to transliterate from Ge'ez to Latin script) is Ge'ez for "cross". The festival is known as Feast of the exaltation of the holy cross in other Orthodox, Catholic or Protestant churches. The churches that follow the Gregorian calendar celebrate the feast on September 14. The Meskel celebration includes the burning of a large bonfire, or Demera, based on the belief that Queen Eleni had a revelation in a dream. She was told that she shall make a bonfire and that the smoke would show her where the true cross was buried. So she ordered the people of Jerusalem to bring wood and make a huge pile. After adding frankincense to it the bonfire was lit and the smoke rose high up to the sky and returned to the ground, exactly to the spot where the Cross had been buried. This Demera-procession takes place in the early evening the day before Meskel or on the day itself, according to local traditions. The firewood is decorated with daisies prior to the celebration. Afterwards, charcoal from the remains of the fire is collected and used by the faithful to mark their foreheads with the shape of a cross (compare Ash Wednesday). Edward Ullendorff records a number of beliefs of the meaning of Demera, with some believing that it "marks the ultimate act in the cancellation of sins, while others hold that the direction of the smoke and the final collapse of the heap indicate the course of future events -- just as the cloud of smoke the Lord over the Tabernacle offered guidance to the children of Israel (Exod. 40:34-38)." One explanation for the high rank this festival has in the church calendar is that it's believed that a part of the true Cross has been brought to Ethiopia from Egypt. It is said to be kept at Amba Geshen, which itself has a cross shape. According to the Eritrean Orthodox Church, the discovery of the True Cross is traditionally believed to be in March, but Meskel was moved to September to avoid holding a festival during Lent, and because the church commemorating the True Cross in Jerusalem was dedicated during September. Ullendorff speculates that Meskel replaced an older festival, with pagan and Hebraic associations, which he believes received its Christian sanction around the reign of Emperor Amda Seyon in the fourteenth century. "The most ancient meaning of these feasts -- as was also the case in Israel -- was no doubt seasonal: the month of Maskaram marked the end of the rains, the resumption of work, and the reopening of communications."