Day-Timer is an American manufacturer of personal organizers and other paper-based time management and organizational tools.

[6] The family operation was known for printing calendars for local churches,[7] and advertising products, school yearbooks, and other marketing and publication materials.

[1] In 1959, Accountant's Day was assigned the generic name "Day-Timer" and began to grow sales in the financial, advertising, and architectural worlds.

By 1987, the product was selling successfully even during economic downturns since demand for tools that could provide greater managerial efficiency was largely not impacted.

[10] The main Day-Timer product has a page for each day, with spaces for annotating various kinds of activities; there is also a pull-out calendar which can provide a view of the year as a whole.

[7][citation needed] The company's East Texas, Pennsylvania factory facility also emerged as a popular destination for Day-Timer customers.

"[12] Several notable public figures who enthusiastically used Day-Timers included Dwight Eisenhower, Bob Hope, and Lorne Greene.

"[14] By 2000, Day-Timer Organizer had gone through several versions, and the product was well-received, twice winning "Editor's Choice" awards from PC Magazine.

[13] Datebooks and personal organizers tended to inspire loyalty to particular brands; in July 2006, The Morning Call, an Allentown-based newspaper reported, "Some people cannot live without their Day-Timer Day Planners.

[citation needed] Paper-based personal organizers continued losing market share to digital versions and electronic devices.

[17][9] Day-Timer struggled during the Great Recession; in 2009, the company reduced employees' pay as opposed to conducting layoffs.

[9] In 2012, ACCO Brands merged with MeadWestvaco, which also had other personal organizer products, including At-A-Glance and Day Runner; to eliminate redundancies, corporate heads decided to shut down Day-Timers' historical Lehigh Valley-based headquarters, leading to the loss of 300 jobs there, and shifted Day-Timer product operations to corporate facilities in New York, Ohio, and Illinois.