Suppose you want to ask someone the time in French. You can ask what time it is - Quelle heure est-il? Or you can inquire if they have the time - Vous avez l'heuere?/Tu as l'heuere? English-speakers use these same questions to ask for the time.
To tell the time, you begin by saying Il est... (it is...). Then you insert the number of the hour plus the word heure(s). For example, if it is three o' clock, you will say Il est trois heures. If it is three fifteen, add quinze or et quart after heures. If it is three thirty, add trente or et demie after heures. If it is three forty-five, there are two different ways to tell the time: by still looking forward from 3:00 - Il est trois heures quarante-cinq, or by looking backward from 4:00 - Il est quatre heures moins le quart or Il est quatre heures moins quinze.
To ask someone what time an event is at, ask Á quelle heure...? At what time...? If you want to know specifically when something occurs, especially habitually, ask Quand...? When...?
To explain that an event happens between certain hours, use the formula entre ___ et ____ or de ___ (jusqu')à.