Changes in programs and policies for The Church of Jesus Christ of Latter-day Saints have occurred periodically during its 176-year history, as conditions, circumstances, technologies, membership numbers and needs changed.

For example, meetings weren't always in a three-hour block; "fast day" wasn't always on Sunday; teachers and priests weren't always ordained at ages 14 and 16 respectively; missionaries didn't begin full-time service at age 19; and chapels didn't always include cultural halls.

Some of the changes are announced at general conferences such as the one taking place this weekend.

Among the many changes over the years:

Buildings — LDS chapels and classrooms, previously separate structures, were joined beginning in 1920 through the use of a cultural hall and foyer. During President David O. McKay's tenure in the 1950s, cultural halls were linked to chapels by sliding curtains.

Family Home Evening — This program was first announced in 1915 by the First Presidency. Monday became the designated night church-wide in 1970.

Fast Day — Starting in 1896, Fast Day was set on the first Sunday of the month, instead of the first Thursday.

Genealogy — Local wards and stakes begin to establish on-site genealogical facilities in 1964. The Genealogical Department was renamed the Family History Department in 1987. FamilySearch software was released by the church in 1990.

General authorities — The First Presidency announced a new leadership position, assistant to the Twelve, in 1941. Emeritus status came along in 1978. The Second Quorum of the Seventy was created in 1989. General authorities stopped serving on boards of directors for businesses starting in 1996. Area authority seventies were called beginning in 1995.

General conference — The twice-yearly meetings were shortened from three days to two days in 1977. Until then, conferences were planned to include April 6, the anniversary of the founding of the church. Conferences were sometimes held on non-consecutive days.

Home teaching — "Ward teaching" was replaced by home teaching starting in 1964.

Institute — The church's first Institute began in 1926, not at Brigham Young University, but at the University of Idaho.

MIA — The Mutual Improvement Association was revised and renamed Young Men and Young Women starting in 1974. (Young Women's Mutual program was originally called "The Young Ladies' Retrenchment Association.") "M-Men and Gleaners" groups started in 1921 to serve young people ages 17-23, and continued until 1974.