Apollo was born on the seventh day () of the month Thargelion — according to Delian tradition — or of the month Bysios — according to Delphian tradition.

In fact, because of atmospheric refraction and because the sun appears as a disk and not a point, part of the midnight sun may be seen on the night of the northern summer solstice up to about 50 ′ () south of the Arctic Circle ; similarly, on the day of the northern winter solstice, part of the sun may be seen up to about 50 ′ north of the Arctic Circle.

He was born at Thurii ( in present day Calabria, Italy ) in Magna Graecia and taken early to Athens, where he became a citizen, being enrolled in the deme Oion () and the tribe Leontides.

Complex systems of predicting fate and destiny based on one's birthday, birth season, and birth hours, such as ziping and Zi Wei Dou Shu () are still used regularly in modern day Chinese astrology.

Beltane () is the anglicised spelling of the Goidelic name for either the month of May or the festival held on the first day of May.

Canada Day () is the national day of Canada, a federal statutory holiday celebrating the anniversary of the July 1, 1867, enactment of the British North America Act, 1867 ( today called the Constitution Act, 1867, in Canada ), which united three colonies into a single country called Canada within the British Empire.

Easter () or Pascha (, Paskha ; Pasḥa ; from Pesaḥ ) is a Christian festival and holiday celebrating the resurrection of Jesus Christ on the third day after his crucifixion at Calvary as described in the New Testament.

The Day of German Unity () is the national day of Germany, celebrated on 3 October as a public holiday.

In Hebrew, the word Shabbat () can also mean "( Talmudic ) week ", so that in ritual liturgy a phrase like " Yom Reviʻi bəShabbat " means " the fourth day in the week ".

" () commands, in reference to God's sparing of the firstborn from the Tenth Plague: And this day shall be unto you for a memorial, and ye shall keep it a feast to the lord ; throughout your generations ye shall keep it a feast by an ordinance for ever.

The festival traditionally begins on the first day of the first month () in the Chinese calendar and ends on the 15th ; this day is called Lantern Festival.

* 86, 400, 000 () milliseconds — one day

This day () commemorates the Constitution of 1917, promulgated after the Mexican Revolution on February 5.

The Ides of March () is the name of the 15th day of March in the Roman calendar.

The proper name for this Sunday is The Sunday of Forgiveness, both because of the Gospel theme for the day () and because it is the day on which everyone asks forgiveness of their neighbor.

Blessed Junípero Serra (; ), known as Fra Juníper Serra in Catalan, his mother tongue, () ( November 24, 1713 – August 28, 1784 ) was a Majorcan Franciscan friar who founded the mission chain in Alta California of the Las Californias Province in New Spain — present day California, United States.

The day of Līgo () ( 23 June ) and the day of Jāņi ( pronounced ) ( 24 June ) are public holidays, and people usually spend them in the countryside.

The festival's eve Jāņu vakars () is held in the evening of 23 June and goes on all through the night Jāņu nakts (), where people Līgo ( sway ) into the following day.

Traditionally, families make Osechi () for new year day because cooking during the first 3 days of the new year is considered unlucky.

Seizing the initiative in the early afternoon, Gronau's two divisions attacked with light artillery and infantry into the gathering Sixth Army and pushed it back into a defensive posture before the planned allied assault for the following day, but the threat to the French offensive by Kluck's wheeled First Army in this preliminary Battle of the Ourcq () ignored the allied forces advancing against his right flank, and was later reduced both by the arrival of the taxicab reinforcements from Paris and orders for Kluck to retreat to the Aisne River, delivered by Moltke's staff officer, Oberstleutnant Richard Hentsch.

() Matthew's narrative tells of " wise men " ( grk. μαγοι magoi ) who follow a star to the house where Jesus dwelt, and indicates that the Magi found Jesus some time later, less than two years after his birth, rather than on the exact day.

The day commemorates Buddha's making peace among his disciples by retreating into the wilderness.

Shabbat, the weekly day of rest lasting from shortly before sundown on Friday night to nightfall Saturday night, commemorates God's day of rest after six days of creation.

* Passover ( Pesach ) is a week-long holiday beginning on the evening of the 14th day of Nisan ( the first month in the Hebrew calendar ), that commemorates the Exodus from Egypt.

The day commemorates the institutional referendum held by universal suffrage in 1946.

* 1290 – King Edward I of England issues the Edict of Expulsion, banishing all Jews ( numbering about 16, 000 ) from England ; this was Tisha B ' Av on the Hebrew calendar, a day that commemorates many Jewish calamities.

Tisha B ' Av is a fast day that commemorates two of the saddest events in Jewish history that both occurred on the ninth of Av — the destruction in 586 BCE of the First Temple, originally built by King Solomon, and destruction of the Second Temple in 70 CE.

The ninth century Stowe Missal commemorates his feast day, along with Mellitus and Laurence.

* Independence Day, commemorates the day of the First Republic in 1918.

This holiday commemorates the day the Children of Israel reached the Red Sea and witnessed both the miraculous " Splitting of the Sea ," the drowning of all the Egyptian chariots, horses and soldiers that pursued them, and the Passage of the Red Sea.

The day before is known as Lazarus Saturday, and commemorates the resurrection of Lazarus from the dead.

King Stephen died on the feast day which commemorates the bodily assumption into heaven of the Blessed Virgin Mary, the Feast of the Assumption on 15 August, in the year 1038, at Esztergom-Szentkirály or Székesfehérvár, where he was buried.

This day commemorates the Mexican Revolution which started on November 20, 1910 when Francisco I. Madero planned an uprising against dictator Porfirio Díaz's 31-year-long iron rule.

* July 18 – King Edward I of England orders all Jews ( then numbering around 16, 000 ) to leave England by November 1 ( All Saints Day ); on the Hebrew calendar this is Tisha B ' Av, a day that commemorates many calamities.

For this achievement Titus was awarded a triumph ; the Arch of Titus commemorates his victory to this day.

Holy Saturday commemorates the day during which Christ lay in the tomb.

Every day throughout the year commemorates some saint or some event in the lives of Christ or the Theotokos.

It commemorates the armistice signed between the Allies and Germany at Compiègne, France, for the cessation of hostilities on the Western Front, which took effect at 11: 00 a. m. in the morning — the " eleventh hour of the eleventh day of the eleventh month.

Armistice Day ( which overlaps with Remembrance Day ) is on 11 November and commemorates the armistice signed between the Allies of World War I and Germany at Compiègne, France, for the cessation of hostilities on the Western Front of World War I, which took effect at eleven o ' clock in the morning — the " eleventh hour of the eleventh day of the eleventh month " of 1918.

The day commemorates Luther Blanchard, the fifer who marched the local minuteman company to the Battle of Concord on April 19, 1775.

The second day is known as the Synaxis of the Theotokos, and commemorates the role of the Virgin Mary in the Nativity of Jesus.

Anzac Day, 25 April is another day strongly associated with Australian nationhood, however it more particularly commemorates Australians who fought in wars and is named to honour the soldiers of the Australian and New Zealand Army Corps who landed at Gallipoli, on that same day in 1915, during the First World War.