In the 1983 " Liber Hymnarius " from Solesmes, it is stated that, " When an ordinary syllable is set to one note, this represents the fundamental rhythmic value used in Gregorian chant ( i. e. valor syllabicus medius ).

When the lunar calendar was changed to the Gregorian calendar at the beginning of the Meiji era, the localities in Japan reacted differently and this resulted in three different times of Obon.

When applying the Gregorian formula, the date is varied each year in the Gregorian calendar:

When Vartan Gregorian was six years old his mother, then twenty-six, died of pneumonia.

When the Gregorian melodies were still the sole music of the Church, it was the papal choir that set the standard for the rest of Christendom, both in regard to the purity of the melodies and their rendition.

When Danican's poorly trained men attacked, on 13 Vendémiaire, 1795 — October 5, 1795, in the calendar used in France, at the time — Napoleon ordered his cannon to fire grapeshot into the mob, an act that became known as the " whiff of grapeshot ".

When era is extended to a calendar system, it is known as a calendar era.

When Julius Caesar established his calendar in 45 BC, he set March 25 as the spring equinox.

When the observational form of the calendar was in use, whether or not an embolismic month was announced after the " last month " ( Adar ) depended on ' aviv ripeness of barley, fruits of trees, and the equinox.

When the government official Dan Song proposed the Chinese calendar should be reformed in 123 to adopt certain apocryphal teachings, Zhang opposed the idea.

When dates or times are expressed as years with a decimal fraction from J2000, the years are of exactly 365. 25 days, which is the average length of a year in the Julian calendar.

When inserted into the Roman Catholic calendar of saints in 1738, his feast day was assigned to 24 November.

When a feast on the moveable cycle occurs, the feast on the fixed cycle that was set for that calendar day is transferred, with the propers of the feast often being chanted at Compline on the nearest convenient day.

When feasts occurred, they were either determined by lunar cycles or the Egyptian calendar.

When he devised his table, Julian calendar years were identified by naming the consuls who held office that year — he himself stated that the " present year " was " the consulship of Probus Junior ", which he also stated was 525 years " since the incarnation of our Lord Jesus Christ ".

When Horn is shocked to see the year 1961 showing on the wall calendar, the couple assume that the desert heat has made him mentally unstable.

When Saint Thomas Aquinas's feast was inserted into the Roman calendar, for celebration on the same day, the two African saints were thenceforth only commemorated.

When depicted in Aztec codices Tamoanchan is frequently associated with the trecena 1 Calli in the Aztec calendar.

When the 1969 reform of the Catholic calendar moved him to 28 January, they were moved back to 7 March ( see General Roman Calendar ).

When that calendar was revised in 1969, the individual celebrations of St Barbara, St Catherine of Alexandria, St Christopher, and St Margaret of Antioch were dropped, but in 2004 Pope John Paul II reinstated the 25 November optional memorial of Catherine of Alexandria, whose voice was heard by Saint Joan of Arc.

When noting dates occurring within the period, " Old Style " and " New Style " are used to distinguish which calendar was used by the person who recorded the date.

When Annie Clarke's husband John dies from leukaemia at an early age, her close friend Chris Harper, anxious to purchase a comfortable sofa for the visitors lounge in the hospital where he was treated, hits upon the idea of printing a calendar featuring some of the members of the Knapely chapter of the Women's Institute discreetly posing nude while engaged in everyday activities, such as baking and knitting, in order to raise funds.

When the German Grand Prix was part of the Formula One calendar, a German driver did not win until 1995 ; Michael Schumacher won that year and has won 4 times in total ; and his brother Ralf won in 2001.

When Sun Yat-sen declared the foundation of the Republic of China on 2 January 1912, he decreed that this was the 12th day of the 11th month of year 4609 ( epoch: 2698 BC ), but that the state would now be using the solar calendar and count 1912 as the first year of the Republic.

When the calendar system of Anno Domini was first introduced by Dionysius Exiguus in AD 525, he assigned the beginning of the new year to March 25 since, according to Catholic theology, the era of grace began with the Incarnation of Christ.

When the great reform of the 11th century had put an end to the direct jurisdiction of the lay abbots, the honorary title of abbot continued to be held by certain of the great feudal families, as late as the 13th century and later, the actual head of the community retaining that of dean.

When pro-reform forces came into power in the spring 1997, an ambitious economic reform package, including introduction of a currency board regime, was agreed to with the International Monetary Fund and the World Bank, and the economy began to stabilise.

When pro-reform forces came into power in the spring 1997, an ambitious economic reform package, including introduction of a currency board regime, was agreed to with the International Monetary Fund and the World Bank, and the economy began to stabilise.

When Alexander II came to the throne in 1855, desire for reform was widespread.

When in 1864 no party proved capable of governing for long, Macdonald agreed to a proposal from his political rival, George Brown, that the parties unite in a Great Coalition to seek federation and political reform.

When the " nations " of the council pressed their plans for reform, Martin V submitted a counter-scheme and ultimately entered into negotiations for separate concordats, for the most part vague and illusory, with the Holy Roman Empire, England, and France.

When Gladstone first joined Palmerston's government in 1859, he opposed further electoral reform, but he changed his position during Palmerston's last premiership, and by 1865 he was firmly in favour of enfranchising the working classes in towns.

When the Opposition raised the issue of reform during one of the first debates of the year, the Duke made a controversial statement defending the existing system of government, recorded in the formal " third-party " language of the time:

When craftsmen, consumers, and manufacturers realised the aesthetic and technical potential of the applied arts, the process of design reform in Boston started.

When Taraki realized the degree of popular dissatisfaction with the reform he began to abandon the policy.

When he put these reform proposals to the Representative Assembly on September 30, 1799, they met with massive resistance.

When the weather allows it, these dinoflagellates break out of their shells and are in a temporary stage, the planomeiocyte, when they quickly reform their individual thecae and return to the dinoflagellates as at the beginning of the process.

When the republics of Estonia and Latvia were founded in 1918 – 19, the Baltic German estate owners were largely expropriated in a land reform, although the Germans were given considerable cultural autonomy.

When the Liberal-supporting Daily News used official import prices to demonstrate that a loaf of bread under tariff reform would be smaller than a free trade loaf of bread, Chamberlain arranged for two loaves to be baked based upon free trade and tariff reform prices.

When the sea cuts across it permanently, everything beyond the breach is swept away, only to eventually reform as a new spit pointing further south.

When the municipal reform was carried out in the 1970s, Gislaved adapted the still unused coat of arms as the municipal arms.

When Mike Patton was questioned in 2008 by co-hosts of Fuse TV's Talking Metal On Fuse if a Faith No More reunion was a possibility, Patton replied " I highly doubt it ", but also stated in a January 2008 interview with Artisan News that he " wouldn't rule it out ", adding " I don't think we would need to reform the band, but maybe there's other things we could do together.

When China began to reform its economy, Xiamen was made one of the original Special Economic Zones in 1980, to attract foreign investment, particularly from overseas Chinese.

When Selim III came to the throne in 1789, an ambitious effort of military reform was launched, geared towards securing the Ottoman Empire.

When he asked the government for more land and more money, however, the response was that he should build only a small-scale experimental prison-which he interpreted as meaning that there was little real commitment to the concept of the Panopticon as a cornerstone of penal reform.

When the reign of Louis Philippe came to a close through the opposition of his ministry, with Guizot at its head, to the demand for electoral reform and through the policy of the Spanish marriages, Cousin, who was opposed to the government on these points, lent his sympathy to Cavaignac and the Provisional government.

When Lamont quits his job and Fred fires his new man, the two decide to reform their partnership despite the fact that both are too proud to admit that they couldn't make it without each other.

When in 1895 King Chulalongkorn established the monthon as part of the thesaphiban administrative reform, Nakhon Sawan became capital city of Monthon Nakhon Sawan.