Time and timing in the city: how to represent dynamic urban entities in a map-based platform

The model of urban entities to build a temporal indexing system for co-existing services and activities in the city is based on the development of time-features and time-based solutions for data management and retrieval in complex changing environments, considering the relation between spa-tial and time attributes, the time granularity organized in a scale theory, the multidimensionality and sematic of time. Starting from the model, this work present a pragmatic solution to build a global calendar of the city to represent real-time and fast retrieve a big dataset of entries. The presented solution on based on the extension of CRON expressivity on the basis of ICalendar basic features in order to switch from Point-Based CRON Ex-pressions to Interval-Based CRON Masks.