Systems and methods are provided herein for altering a start time of an event based on indicia of how late event attendees will be for the event that are retrieved from location applications corresponding to each attendee of the attendees. For example, a media guidance application may determine a start time of an event, a location of the event, and attendees of the event. The media guidance application may determine location applications corresponding to the attendees. The media guidance application may query the location applications for arrival times of each attendee. The media guidance application may calculate a plurality of differences between each of the arrival times and the start time of the event. Based on the plurality of differences, the media guidance application may delay the start time of the event.