Keep track of important deadlines, special events and more with clear organization and unique style. The AT-A-GLANCE Desk Calendar Refill covers 12 months from January 2021-December 2021. Each day covers a two page spread. The left page is ruled for easy appointment tracking, while the right page is unruled for open notetaking. Pages measure 3-1/2" x 6". Break your day into manageable 30-minute periods. Appointment times are available 7: 00 a. m. – 5: 00 p. m. each day for detailed planning. Expand your organizational skills with special features, including past, current, and future reference calendars on each spread. Refills let you reuse your favorite calendar each year. This refill is compatible with standard 17 Style bases with 2 rings, sold separately.