Same word as calender:

arrange, bill, book, button down, calender, catalogue, census, chart, chronicle, classify, detail, docket, enroll, enter, enumerate, file, index, inscribe, insert, inventory, invoice, itemize, keep count, manifest, note, numerate, particularize, peg, place, poll, post, put down as, put down for, record, register, run down, schedule, set down, specialize, specify, spell out, tab, tally, tick off, write down