Matins underwent profound changes in the 20th century. The first of these changes was the reform of the Roman Breviary by Pope Pius X in 1911, resulting in what Pope Paul VI called "a new Breviary". The reservation of Psalms 1-108/109 to matins and the consecutive order within that group were abandoned, and, apart from the invitatory psalm, which continued in its place at matins every day, no psalm was ordinarily repeated within the same week. To facilitate an even distribution among the days of the week, the longer psalms were divided into shorter portions, as only the very long Psalm 118/119 had been previously. Matins no longer had 18 psalms on Sundays, 12 on ordinary days and 9 on the more important feasts: on every day it had 9 psalms, either distributed among three nocturns or recited all together, maintaining the distinction between celebrations as three nocturns with nine readings (including Sundays) and those arranged as a single nocturn with only three readings.