chronogram [chronograms](a sentence or inscription in which specific letters, interpreted as numerals, stand for a particular date when rearranged) noun [UK: krˈɒnəɡrˌam] [US: krˈɑːnəɡrˌæm]
timeline [timelines](schedule of activities) noun [UK: ˈtaɪm.laɪn] [US: ˈtaɪm.laɪn]