This document contains information about prepositions of time and place, specifically focusing on the prepositions "in", "on", and "at". It provides examples of how each preposition is used for dates, days, periods of time, locations, and phrases. The document was created by Prof. Suhaila Temponi for an English class at Santiago Mariño University Polytechnic Institute in Maracaibo, Venezuela on September 20, 2018.