AFTER 12 Days of Christmas, come 365 Days of Calendars.

For 1979, Calendars, it seems, are not meant just to tell you the day and date. Calendars also tell you about moments in the movies, foot races, chocolate mousse, gory stories, nearly nude male models, Indians and many other things you might never relate to the date.

They provide so much information that you may become so entranced with the Things You Never Knew 'Til Now that you might not remember even to look at the date. Now that we have a new profession, the calendar writer, each year we have more and more wall calendars, engagement books and some halfway measures meant to be hung but with squares for notes.

Science fiction, sports and body improvement; wilderness scenes; art reproductions, and food are big categories. Biggest of all is the Something for Everybody division, with a calendar for you, be you a collector of miniatures or a lover of cats.

Calendars are on sale everywhere. Those that are hard to find are listed here with addresses. German, French and some other foreign language art calendars are best found at Franz Bader's Gallery and Bookstore. Brentano's at their multiple outlets have good stocks, as do other bookstores. The Smithsonian museums, especially the Renwick Gallery, and the Corcoran Gallery, have extensive stocks of art calendars.

The calendars below are listed in the order they piled up on the Living desk.

THE RUNNER'S CALENDAR, text by Dr. George Sheehan; Simon & Schuster, $4.95. A list of over 200 major races, a workout and weight log, space to record running time and distance and some enervating pictures of runners -- all suggest to some of us that the best exercise is jumping to conclusions.

EAT AND RUN, Your 1979 Diet, Exercise & Engagement Calendar, by Jan Ferris Koltun; Holt, Rinehart & Winston, $5.95. This spiral-bound book will nag you every day of the year with places to list what you ate, the calories, the exercise, the vitamins and your weight. A smaller column is for your engagements and feelings. Included is some very useful information on dieting and exercise, as well as a funny group of cartoons on the subject.

PUMPING IRON CALENDAR, by Charles Gaines and George Butler; Simon and Schuster, $4.95. "I mostly dream that I win, how i destroy all my competitors. And then the dream always finishes off with me sitting on a huge chair, like the king with all the servants around." -- Arnold Schwarzenegger. This collection of bicep beauty should even up the score for those girly calendars of days gone by.

THE SPORTS FAN'S CALENDAR, 365 Days of Nostalgia, by Len Hollreister; Thomas Y. Crowell, $3.95. Obviously you know that in 1952, "George Mikan, first NBA superstar, had his best scoring game when he hit for 61 points to lead the Minneapolis Lakers over the Royals, 91-81." But did you remember that in 1920 "Joe Malone scored seven goals in an NHL game and led Quebec Bulldogs over Toronto Saint Pats, 10-6"?

VIDAL SASSOON'S CALENDAR OF BEAUTY AND HEALTH; Simon & Schuster, $4.95. Everyday you have to face your face and what you should do about it.

SKING '79, by Eric Schweikardt; Universe, $5.95. A full-color wall calendar for the downhill demons.

THE AMERICAN WILDERNESS CALENDAR, a Time-Life Book, $5.95. Twelve handsome color photographs, in wide, wide lens photographs.

WILDERNESS, SIERRA CLUB ENGAGEMENT CALENDAR; Charles Scribner's Sons, $4.95. A picture a week from the magnificent unspoiled wilderness the Sierra Club is trying to protect. Spiral bound.

SIERRA CLUB TRAIL CALENDAR; Charles Scribner's Sons, $4.95. Twelve good-looking photographs with thoughts for the month and dates of the great mountain ascents.

THE LAST WILDLANDS, Friends of the Earth, photographs by Joseph E. Holmes, lines by Gary Snyder; Simon and Schuster, $4.95. Supersaturated colors and free-form words. The introduction urges you to save the calendar because it will be usable again in 1990, when the days and dates are the same.

SMITHSONIAN ENGAGEMENT CALENDAR: ART OF THE FLOWER, coordinated by Ann McClellan Miller; Smithsonian/Universe, $5.95. Flowers bloom at the Smithsonian in places you might not expect -- "View of World Trade Center from Rose Garden," an oil by Catherine Murphy; an 18th-century Indian block-printed cotton; carnations on the cover of the musical composition "Goodbye to All, Goodbye," written by J. Reginald MacEachron in 1901.

PATRICK WOODROFFE; Simon & Schuster, $4.95. A full-color calendar illustrated by the artist of the best-selling book "Mythopoeikon." Cutesy fantasy.

THE DRAGON CALENDAR; Simon & Schuster, $4.95. Less gory and ghoulish than some of the others, with illustrations by many of the better-known science-fiction artists.

THE FRANK FRAZETTA CALENDAR; Peacock Press/Bantam Books, $4.95. You'd have to be well into the blood and biceps school of fantasy to like this effort.

THE SULAMITH WUELFING CALENDAR; Peacock Press/Bantam Books, $5.95. The far opposite to Frazetta's fantasy, is Wuelfing's sickly sweet

THE MIGHTY MARVEL HULK CALENDAR; Simon & Schuster, $4.95. The whole thing's not a mighty marvel but a Horrible Hunk. Still S&S say it's a best seller. It's more like S&M.

THE THOMAS MERTON APPOINTMENT CALENDAR, text and drawings by Merton; Sheed, Andrews and McMeel, Inc., $5.95. Graphically this book is pleasing. And the text, whether you are Catholic or agnostic, is thoughtful. "If our life is poured out in useless words, we will never hear anything, will never become anything, and in the end, because we have said everything before we had anything to say, we shall be left speechless at the moment of our greatest decision."

THE KAHLIL GIBRAN DIARY, with a selection for each week from "The Prophet" and his other writings; Alfred A. Knopf, $5. Red, blue and ivory vinyl bindings. "They deem me mad because I will not sell my days for gold; And I deem them mad because they think my days have a price," says prophet Gibran.

CALENDAR OF DIVERS DEVICES, 1622; Folger Shakespeare Library, $5.95. "There is much feasting in this month but few the better for it" is the motto which sets the pace for this wall calendar with drawings from the commonplace book by Thomas Fella. The Folger also is offering a Shakespeare birthday book with a silk-finish cover and quotations from you know who for every day.

TRADITIONAL LANDSCAPES WALL CALENDAR; The National Gallery of Art, $4. Paintings from the collection.

EAST BUILDING ENGAGEMENT CALENDAR; The National Gallery of Art, $6.95. Architectural scenes of the new I.M. Pei building and contemporary additions to the collections.

A TREASURY OF FAR EASTERN ART ENGARGEMENT CALENDAR; The Metropolitan Museum of Art, $3.95. Hardly anything is as fascinating as oriental decorative arts, and the Metropolitan has the best. The book is a feast of jade, ivories, silds, woodcuts, stone sculpture, silver and peacock feathers. The text is by Wen Fong, Far Eastern consultant at the Met. Each picture, thankfully, has a good long descriptive label. Beware of dragons. Spiral Bound

METAMORPHOSES; The Metropolitan Museum, $3.95. Unfortunately literalminded folk have forced producer Robie Rogge and designer Marleen Adlerblum into actually including a readable calendar. The calendars were much better when you couldn't find the day and the date. To console, this year there's a marvel a month with a nude statue who suddenly comes alive to kiss the surprised sculptor, a Japanese player who turns out to be an animal under his peopel mask, and other days of derring do. Again, the Met believes people like more information, so it has included appropriate stories with each picture.The Met is also offering a new address book with pictures and information concerned with -- what else -- letters.

ART OF OUR TIME, from the Albright-Knox Art Gallery in Buffalo N.Y.; Universe Books, $3.50. Each month is a postcard. The back cover is a prop. It tells the day and date, lists the holidays. What more could you ask?

SPECTRA 79, designed by Jody Trivison; Universe, $7.95. A graphically arresting design with a line for every day of the month, a page and a different color for every month, all in a supersize, 11 1/2 by 13 inches

THE PEACH BLOSSOM SPRING, handscroll, ink and color on paper, by Ch'iu Ying (c.1522-c.1560); Museum of Fine Arts Boston/Universe, $8.95. You don't have to read Chinese to understand this scroll painting/story of the fisherman who finds paradise. The scroll unrolls to tell the story, the month, the day, the date. Easily, the most unusual calendar of the year.

MUSEUM OF MODERN ART 50th ANNIVERSARY CALENDAR, designed by Ira Howard Levy with Neil Davis; Museum of Modern Art, 7.95. Fifty-three full-page reproductions of the major acquisitions of each year, with a chronology of the museum's history.

LOUIS COMFORT TIFFANY in the Design Collection of the Museum of Modern Art, photography by Phil Marco, designed by Peter Bradford; Museum of Modern Art, $7.95. With an informative introduction by J. Stewart Johnson, curator of the MOMA's Design Collection. The most beautiful calendar of the year and the most interesting text.

JAPANESE LANDSCAPES, from the Philadephia Museum of Art; Universe, $8.95. Hiroshige, Hokusai and Kuniyoshi, the great painters of Japan, paint their country in snow and bollm for a handsome wall calendar.

SPLENDORS OF NATURE, by the Staff of the Museum of Natural History; Smithsonian Institution/Universe, $3.50. Twelve handsome natural objects -- from minerals to sea urchins. Each month is a postcard.

CHINESE FLOWERS & BIRDS; Indianapolis Museum of Art/Universe, $3.50. The Chinese paint the prettiest flowers and birds as you can see in these paintings of the month. All become postcards.

KATE GREENAWAY'S CALENDAR OF GAMES, from the book published by Viking Press; Universe, $3.50. A picutre and instruction of a game a month. Each is a postcard.

VINTAGE 1979, WINE CALENDAR & CELLAR BOOK, illustrated by Rik-Olson; 101 Productions/Charles Scribner's Sons, $4.95. With a double page each month for listing your cellar acquisitions and vintage charts.

MAGGIE BAYLIS HERBAL; 101 Productions/Charles Scribner's Sons, $4.95, With such news of the day as "Lightly herbed soup tunes up energy at breakfast. Nasturtiums give a sharp peppery incentive to salad."

THE WOMAN'S DAY CHOCOLATE LOVERS' CALENDAR; Workman Publishing Co., New York, $4.95. Twelve mouth-watering pictures by Lynn St. John with full instructions for making the ultimate chocolate desserts. Just the one to give if you gave an eat-right book last year.

THE FOOD CALENDAR, by Carol Schneider; Universe, $5.95. Thirteen photographs of tasteful foods, from strawberries to eggs. Never has garlic looked so good. A recipe goes with each.

DANCE CALENDAR, Photographs by Herbett Migdoll, Text by Robert Joffrey, edited by William Leighton; Workman Publishing Co., $4.95 needed. Best foot forward full-color photographs of great moments in the dance theater.

DANCING TIMES, by Nancy Reynolds; Universe, $5.95. A gorgeous collection of photographs, sketches and cartoons on the liveliest art.

THE WOMAN'S CALENDAR, by Lynn Sherr and Jurate Kazickas; Universe, $4.95. A note a day the women's way. On Feb. 14, 1978: "Divorced men must pay alimony even for ex-wives who have moved in with other men. N.Y. Court of Appeals Rules." On the same day, this anti-Valentine's Day sentiment: "Luella Mae Valentine of Flint, Mich., asks for a no-fault divorce from Donald Valentine on Valentine's Day and says she will resume her maiden name."

BOOK OF DAYS, Virginia Slims Engagement Calendar; free with a carton of Virginia Slims. April 16: "Today begins National Secretary's Week. Take your secretary to lunch. Or why not be a sport and give him the day off." March 24: "Happy Birthday to Fanny Crosby (1820).... Her publishers were so afraid of crediting her with all she had written that they published 6,000 hymns she wrote under about 200 different names."

TO EACH HER OWN, IMAGES OF WOMEN IN ART, The Art Institute of Chicago; Universe, $7.95. A wall calendar with 13 views of women from Rembrandt to Picasso.

A FOCUS ON THE CHILD IN ART, Engagement Calendar; United Nations Children's Fund, $4. A handsome tri-lingual book in celebration of the International Year of the Child. The beautifully reproduced art comes from 2,000 years and 40 countries.

UNICEF WALL CALENDAR; United Nation's Children's Fund, $1.50. This colorful collection of paintings from children around the world, is inexpensive and cheerful enough to make a fine holiday greeting for those you really like. All the UNICEF pulbications go to help world children. The UNICEF Information Service is at 110 Maryland Ave., NE. Phone 547-0204.

SIEFFA CLUB CALENDAR & ALMANAC FOR YOUNG PEOPLE, by Bill Broder; Charles Scribner's Sons, $4.95 This charming book has a bit of useful information for each day about the Indians and quotations from their ancient wisdom. It also includes such apparently necessary knowledge as "The Many Uses of a Buffalo," Spiral bound.

CALENDAR FOR CHILDREN; Library of Congress. $3. Illustrations from the "Wonderful Wizard of Oz" to the "The Peterkin Papers."

BON APPETTIT SOCIAL PLANNER; Holt, Rinehart and Winston, Inc., $14.95. Address book wine book, recipes, menus and a place to list guests and caterers for your parties are included with the engagement pages. But the publishers obviously think you don't give more than 12 a year, for that's all the space provided. The binding (red pseudo-leather) seems social enough and the color plates of food look good.

SOCIETY OF SCRIBES ENGAGEMENT CALENDAR; Society of Scribes (Box 933, New York N.Y. 10022), $6.95. Included are 54 good-looking plates with quotations handsomely calligraphed, such as Howard Glasser's remark; "There is more to it than wiggling uour fingers & out come the letters."

THE GREAT AMERICAN WEATHER CALENDAR; Sentry Weather Services (Box 287, Lyndonville, Vt. 05851), $3.25. The calendar explains why the winter of '78 was so cold, but makes no predictions for this one. It does cheer you up by noting day by day such gems as: "Jan. 9, 1888, Columbia River froze at Portland, Ore., until 1/26.")

ENGAGEMENT CALENDAR FOR MINIATURE COLLECTORS, compiled by Terry and Fred Rogal; Rooftop Studio (166 East 96th St. New York, N.Y. 10028), $6.95. The number of miniature collectors is no longer small. This pleasant book with 26 color plates shows the work of more than 50 miniature-makers, as well as dates for some 100 miniature shows, lists of 250-odd dealers in miniatures and places to list your purchases.

THE LITERARY ENGAGEMENT CALENDAR, illustrated by William D. Bramhall Jr.; The Brandywine Press, Inc., $5.95. For every day a bon mot -- Dec. 9, 1955: "Marianne Moore, hired by the Ford Motor Co. to select a name for the car that was eventually called the Edsel, suggests "Utopian Turtletop."

LIFE LIBRARY OF PHOTOGRAPHY: PHOTOGRAVURE CALENDAR; Time-Life, $7.95. Twelve photographs by the acknowledged masters of the art are beautifully reproduced here by the gravure process. Finest of all, the cover by Jacques-Henri Lartigue: "Afternoon Walk, Bois de Boulogne, 1911."

JILL URIS' IRELAND CALENDAR, with a commentary by Leon Uris; Bantam Books, $4.95. Few who care for Ireland would want this misty effort.

LEWELLYN'S ASTROLOGICAL CALENDAR; Bantam Books,.3.95. If you're on a star trek, this map of the heavens will guide you through the heaven's influence on your love life, beauty care, gardening, fishing and hunting by the moon and so on. There's a long section on the effect of the planets on Washington. Expect a postal increase, says the stars.

ERIC SLOANE'S SKETCHBOOK CALENDAR; Funk & Wagnalls, $3.95.A sepia look at life.

THE JAMES HERRIOT CALENDAR, paintings by Brian Sanders, illustrating scenes from "All Creatures Great and Small" and "All Things Bright and Beautiful"; Bantam Books, $4.95. Sanders' illustrations are the sort we used to see in the books on Spot and friends.

NOTHING'S HAPPENING BOOK, by Nobody; Harmony Books/Crown Publishers, $2.50. This child of The Nothing Books isn't as good as "Mama and Papa Mothing." It actually has days and dates cluttering its pages. Far better are the originals with Nothing inside them.

CAT CALENDAR, drawings by B. Kliban; Workman Publishing Co., $3.95. For the fierce felinist.

THE EDWARD GOREY CALENDAR FOR 1979: GOREY ENDINGS; Workman Publishing Co., $3.95. After Dracula, what? This magnificent memento mori offers a different unhappy ending for every month: "The end had come, and this was it/He dropped her in the Flaming Pit"; "It's gone beneath the cellar floor/We shall not see it any more." Obviously, the calendar is intended only for those who have read all the Gorey stories, all else will be driven to reading them to learn the beginnings.

THE JEWISH MUSEUM CALENDAR; Cahill & Co., $6.95. If you'd planned ahead you would have bought this calendar in September, because it begins with October -- 15 months for your money, a clear bargain. Better order now for next October. Gives both Jewish and Roman years and lists the holidays.

BLACK SEEDS, RETURN TO THE SOURCE, CALENDAR, photos by Image Expo, graphics by Sababu; First World Publication, $2.95. Available at Toast & Strawberries, Connecticut Avenue and R Street NW, Biographies of black leaders in history and today.

THE MOVIE FANS CALENDAR, compiled and written by Harold P. Burbage Jr. and Michelle Jaal, photos from Culver Pictures Inc.; Universe, $3.95. Thirteen photos on a wall calendar with squares to write your own big scenes on. Each date has a gem of movie mania. Jan. 9: "'No murderesses, no mothers,' reads Greta Garbo's telegram to studio."

CHASE'S CALENDAR OF ANNUAL EVENTS, Special Days, Weeks and months in 1979, by William D. Chase; Apple Tree Press (Box 1012, Flint, Mich. 48501), $7.95. You'll be surprised to know that today is Human Rights Day, not to mention the day Mississippi became the 20th state in 1817 and the day Alfred Bernhard Nobel died at San Remo, Italy. This almanac also lists space milestones, and there's a useful index so you can look up Official Secrets Day if you need to (March 17).

AMERICAN HERITAGE DESK CALENDAR; Simon and Schuster, $12.50. Full of fascinating photographs from the Trieste bathyscape in 1960 to Carry Nation and her 1900 temperance drive.

THE CALENDAR HISTORY OF FAIRFAX COUNTY VA., by Paul S. Worboys; (7413 Parkwood Court, 302, Falls Church, Va. 22042) "On June 14, 1928, the Great Falls Citizens Association protested poison ivy along roads in Falls Church," according to this work. A similar tidbit for every day, but unfortunately the handsome sepia illustrations are not well identified.

CALENDAR OF PANORAMIC MAPS; Library of Congress, $6.95. Fullcolor maps drawn between 1868 and 1896 from Boston to Westerly. A panoramic map, if you didn't know, represents a city portrayed from an oblique angle, showing streets, individual buildings and landmarks in perspective.