In one embodiment, a mobile device generates sensor data configured to describe a geographic position of a mobile device. A list of events is defined according to position data and time data. The geographic position of the mobile device is compared to positions in the list of events of interest and a current time is compared to time data in the list of events of interest. The comparison determines whether events in the list are in range of the mobile device. One or more nearby events in range of the mobile device at the current time or a future time are selected. A command is generated to capture an image of the nearby events using a camera coupled to the mobile device. The captured images may be used to update navigation or map database, provide community or weather data to other users, social media functions, or other features.