Given dates are by official Gregorian calendar.

It lies between March 10 and April 8 of the Gregorian calendar.

It lies between 10 December and 8 January of the Gregorian calendar.

It lies between January 9 and February 7 of the Gregorian calendar.

It lies between February 8 and March 9 of the Gregorian calendar.

It lies between April 9 and May 8 of the Gregorian calendar.

It lies between May 9 and June 7 of the Gregorian calendar.

Thus the first day of the Ethiopian year, 1 Mäskäräm, for years between 1901 and 2099 (inclusive), is usually 11 September (Gregorian), but falls on 12 September in years before the Gregorian leap year.

It is also a leap year starting on Saturday, in the Proleptic Gregorian calendar.

Great Britain and its colonies continued to use March 25 until 1752, when they finally adopted the Gregorian calendar.

The fourth millennium of the Gregorian calendar will begin on January 1, 3001, and end on December 31, 4000.

The Gregorian calendar was not accepted in eastern Christendom for several hundred years, and then only as the civil calendar.

In the Gregorian calendar, it usually begins around 7 December and ends around 21 December (22 December East Asia time).

In 596 Pope Gregory the Great (in office 590 604) sent the Gregorian Mission (including Augustine of Canterbury) into England.

February 14 Russia switches from the Julian calendar to the Gregorian calendar the date skips from February 1 to February 14.

The progress of the Defence Reform Commission, led by chairmen Raffi Gregorian and Nikola Radovanović, the Bosnia and Herzegovina Defence Minister, has been impressive.

Defence reform made impressive progress in 2005 under the guidance of chairmen Raffi Gregorian and Nikola Radovanović, the Defence Minister of Bosnia and Herzegovina.

October ( ) is the tenth month of the year in the Julian and Gregorian Calendars and one of seven months with a length of 31 days.

Alaska Russia settled northwest North America from Siberia, from the west with its own Julian calendar (it did not adopt the Gregorian calendar until 1918).

In Lebanon two Christian celebrations took place on April 8, 2012 as churches following the Gregorian calendar celebrated Easter Sunday and churches following the Julian calendar celebrated Palm Sunday.

April is the fourth month of the year in the Gregorian calendar, the fifth in the early Julian and one of four months with a length of 30 days.

The United States recorded this date as Friday (Gregorian), now known as Alaska Day, whereas the Russian governor, who had remained in New Archangel, would have recorded it as Saturday (Julian).

Containing faculties and institutes of various disciplines of the humanities, the Gregorian has one of the largest and most distinguished theology departments in the world, with over 1600 students from over 130 countries.

Even in the simplest case the last year of one dynasty is the first year of the next dynasty, which amounts to counting that year twice, in terms of the arithmetic process used in the Gregorian calendar.

Because the transfer of ownership officially occurred at Sitka mean solar time (time zones were not yet in use), that was the date and time that Alaska changed from an Asian Julian date to an American Gregorian date.

Apart from his dedication to this cause, he participated in few other activities, the majority of which were related to his Catholic faith in 1916 he participated in a course about Gregorian chant at the Palau de la Música Catalana taught by the Benedictine monk Gregori M. Sunyol.