What Are the Hours? Dividing the Day With Prayer at Fixed Times
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Monastic communities pray at fixed points through the day and night, in a cycle that has structured daily life in such places for fifteen centuries. That schedule shaped how time itself was measured and announced for much of European history.
The cycle
The traditional arrangement divides the day into a series of offices, each consisting of psalms, readings and prayers, and each occurring at a designated time. The night office is the longest and occurs in the small hours. Further offices follow at dawn, at intervals through the working day, at dusk and before sleep, giving seven or eight occasions in total. The whole book of psalms is recited across a fixed period, traditionally a week, so the cycle repeats and a member of the community passes through the entire text continuously. The schedule is the organising structure of the day, with work, meals, reading and sleep fitted around it rather than the reverse, which is the arrangement the rules describe explicitly as the work of God taking precedence.
What the schedule does
The arrangement accomplishes several things beyond the prayer itself:
- •It divides the day into manageable stretches, none of them long, which structures work without a clock
- •It interrupts absorption in any task, which is deliberate and is described as such
- •It synchronises a community, so everyone is doing the same thing at the same time several times daily
- •It covers the whole day including the night, so no part is left unmarked
- •It removes the need to decide when to pray, which converts a recurring choice into a given
- •It produces continuity, since the same texts at the same hours have been recited in the same way for centuries
How they told the time
Keeping a schedule of fixed hours without clocks was a substantial technical problem and the solutions shaped timekeeping generally. The hours were originally unequal, dividing daylight into twelve parts regardless of season, so an hour in summer was considerably longer than one in winter, which suited sundials and suited nothing mechanical. Water clocks, graduated candles and the observation of stars were used to mark the night office. The pressure to know when to ring the bell is widely credited as a driver of the development of mechanical clocks in medieval Europe, since a monastery needed an alarm rather than a display, and the earliest mechanical clocks struck bells rather than showing a face. The word clock derives from the word for bell, which records that origin directly, and the shift to equal hours followed the mechanism rather than preceding it.
What it costs and demands
Living by such a schedule is demanding in ways that are easy to underestimate. The night office breaks sleep into two parts, which was ordinary in pre-industrial societies where segmented sleep appears to have been common, and which is difficult for anyone accustomed to a single block. The schedule admits no flexibility for the sake of a task, so work is abandoned unfinished when the bell goes, which is deliberate and is the point of the arrangement rather than a side effect. Visitors and obligations have to be fitted around fixed points. Communities have adjusted the arrangement repeatedly across history, combining offices, shifting the night office earlier and reducing the number, and each adjustment was argued about at length because the schedule is understood as the substance of the life rather than a container for it.
Beyond the monastery
The schedule reached well outside religious communities in several ways. Bells announcing the offices were audible across a town and supplied the public time signal for everyone within range, which is why church bells governed daily life and why the same bells marked work and market hours. Books of hours, produced in enormous numbers from the fourteenth century, adapted the cycle for lay people and became the most widely owned books of the late medieval period, frequently lavishly illustrated and now a major source for social history. Comparable arrangements exist in other traditions, with Islamic practice prescribing five daily prayers at times defined by the sun, and with Jewish practice having three, each of which structures a day in the same way. Secular descendants persist in the scheduled breaks of institutional life.
The takeaway
Seven or eight offices spaced through the day and night divide time into short stretches, synchronise a community and remove the decision about when to pray. Hours were originally unequal divisions of daylight, differing with the season. The need to know when to ring the bell drove mechanical clock development, and the word clock comes from the word for bell.