Old instruments
Almanac
Direct answer
Almanac: An Almanac is a reference work, traditionally issued for a particular year, that organizes calendar information and practical data such as astronomical events, anniversaries, seasonal notes, tables, and civic facts.
An Almanac is a date-organized reference that gathers practical yearly information.
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At a glance
- Found in
- Historical Almanacs & Instruments
- Related
- Astronomical Almanac, Nautical Almanac, Astrolabe, Armillary Sphere
An Almanac is a date-organized reference that gathers practical yearly information.
An engraved functional orientation; the page explains the real instrument, method, or publication.
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Your daily Almanac letter
One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
The story behind Almanac
Printed almanacs circulated widely for centuries, combining calendars and astronomical tables with regional, commercial, literary, medical, religious, or political material.
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The Book of the Sky
How people learned to read the sky, from Babylon to the day you were born.
Why Almanac matters
The form brings many kinds of time-sensitive knowledge into one navigable place and is the historical model for a broad, living annual guide.
Almanac in practice: an example
A modern almanac page might pair a dated sky event with local rise times, a calendar explanation, and links to the underlying observatory data.
Where readings of Almanac go wrong
An almanac is a format, not a guarantee of accuracy; historical weather, health, and divination claims require source criticism and clear labeling.
Sources and editorial method
Research references used for this entry include:
- Library of Congress: American Almanacs, Seventeenth through Nineteenth Centuries - Authoritative collection context for the history and breadth of printed American almanacs.
- U.S. Naval Observatory: Astronomical and Navigational Almanacs - Official description of current Astronomical Almanac and Nautical Almanac publications.
- Source
- The Great Almanac Dictionary
- Category
- Historical Almanacs & Instruments
- Last updated
- 2026-09-26
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Common questions
What is an Almanac?
An Almanac is a reference work, traditionally issued for a particular year, that organizes calendar information and practical data such as astronomical events, anniversaries, seasonal notes, tables, and civic facts.
What do people get wrong about an Almanac?
An almanac is a format, not a guarantee of accuracy; historical weather, health, and divination claims require source criticism and clear labeling.
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One short letter at 7 each morning: the day’s theme read for your own chart, and one thing to do with it.
