There are five daily obligatory prayers. These prayers and their time zones are:
1. Fajr (morning prayer); After dawn but before sunrise;
2. Duhr (early afternoon or noon prayer); early afternoon till late afternoon;
3. 'Asr (late afternoon prayer) late afternoon prayer till sunset;
4. Maghrib (sunset prayer); just after sunset;
5. Isha (late evening prayer); late evening till late at night.
Consult a prayer manual for full details. Each prayer consists of a fixed set of standings, bowings, prostrations and sittings in worship to Allah.