1. A method for organizing a digital image collection, the method comprising: detecting, by a computing device, a plurality of events in the digital image collection and an associated timespan for each event of the plurality of events; determining, by the computing device, significant events from the plurality of events in the digital image collection, wherein the determining significant events comprises: generating a time series that indicates a number of images captured during a time period covered by the digital image collection; analyzing the time series to find a model that identifies the significant events; and identifying periods of time in which residuals between the model and the time series exceed a specified threshold; and organizing, by the computing device, the plurality of events into an event timeline, such that detected events on an event timeline between the determined significant events are grouped into clusters on the event timeline.