Refill is designed for use with the two-page-per-day, original Day-Timer calendar set. Ideal for hourly billing. Two-page-per-day spreads have a place for lists & the appointment times from 8 AM to 5 PM on one page & a roomy, timed diary record of your work on the other page. Hours are neatly divided into tenths & quarters. Desk loose-leaf format includes address / phone pages, advance planning pages, reference pages, 12 monthly tabbed calendar dividers, 12 monthly auto mileage / expense forms, & a vinyl page locator. Planning pages range 12 months from January to December.