What Is Ramadan and Why Do Muslims Fast?

For one month a year, the rhythm of daily life changes for nearly two billion people. Dinner moves to after dark. Alarm clocks are set for a meal most of the year nobody eats, in the last hour before dawn.
If you have a Muslim friend, colleague, or neighbour, you have probably wondered what is actually going on, and why. This is Ramadan, the most widely observed month in Islam, and there is more to it than not eating.
What Ramadan is
Ramadan is the ninth month of the Islamic lunar calendar. Because a lunar year is about eleven days shorter than a solar one, Ramadan moves earlier each year, travelling through every season over a lifetime. A Ramadan in high summer, with its long days, is a very different fast from one in winter.
Muslims mark this month above all others because it is believed to be the month in which the Qur'an first began to be revealed to the Prophet Muhammad. The fast itself, called sawm in Arabic, is one of the five pillars of Islam, the core acts of worship that structure a Muslim's life.
For the whole month, from dawn to sunset each day, fasting Muslims do not eat or drink. Then, each evening, the fast is broken, families and communities gather, and the month that looks austere from the outside turns out to be one of the most social of the year.
Why Muslims fast
The Qur'an states the purpose of the fast directly, in the second chapter, Surah Al-Baqarah:
O ye who believe! Fasting is prescribed for you, even as it was prescribed for those before you, that ye may ward off (evil)
Qur'an 2:183 (Pickthall)
The Arabic word behind that aim is taqwa, often translated as God-consciousness: a lived awareness of Allah that shapes how a person acts when nobody is watching. The fast is training in exactly that.
Beyond that central purpose, Muslims describe the month in terms like these: self-restraint practised until it becomes a habit; gratitude, learned by feeling what a normal day quietly provides; and closeness to people who go hungry not by choice but by circumstance. Those are spiritual and human reasons. The fast is an act of worship, not a health programme, and it is not presented as one.
How the fast works each day
Suhoor, the meal before dawn
The fasting day begins before it begins. Suhoor is the meal eaten in the last part of the night, before dawn and the Fajr prayer. Many people eat something simple, drink water, pray, and go back to sleep for an hour if they can. Households often make it a small family occasion rather than a solitary snack.
The hours of the fast
From dawn until sunset, a fasting person takes no food and no drink, including water. The fast also involves more than the stomach: Muslims are taught to guard their speech and temper while fasting, avoiding arguments, gossip, and dishonesty, on the understanding that going hungry while behaving badly misses the point.
Working, studying, and ordinary life continue. In many Muslim-majority countries hours are adjusted, but in much of the world Ramadan simply runs alongside the normal school and office day, which is why a fasting colleague in the late afternoon may be conserving energy.
Iftar, breaking the fast
At sunset, the call to the Maghrib prayer marks iftar, the breaking of the fast. The widespread custom is to begin as the Prophet is reported to have done, with dates and water, then pray, then sit down to a proper meal. Iftar is frequently shared: families host each other, mosques lay on free meals open to anyone, and inviting others, especially people in need, is treated as one of the month's characteristic good deeds.
Who does not fast
The fast is an obligation for adult Muslims in good health, and Islam builds exemptions into it openly. Children do not fast, though older children sometimes practise with short or partial fasts as a gentle introduction. People who are ill, elderly and frail, or travelling do not fast on the days affected. Women who are menstruating do not fast during their period, and pregnant or breastfeeding women may postpone the fast where there is concern for their own health or their child's.
For most of these cases the pattern is qada: the missed days are made up, day for day, at a later date when a person is able, ideally before the next Ramadan. Where someone cannot fast at all because of a lasting condition or old age, fidya applies instead: feeding a person in need for each day missed. The details vary, and Muslims take them to scholars they trust. The exemptions are not loopholes. They are part of the design, and using them carries no shame.
The nights of Ramadan
Ramadan is as much a month of nights as of days. After the night prayer, Isha, mosques hold taraweeh, additional congregational prayers offered only in this month. Across the nights, the imam typically works through the entire Qur'an in these prayers, and people attend as many nights as they are able.
Laylat al-Qadr, the Night of Decree
In the last ten nights of the month, Muslims look for Laylat al-Qadr, the Night of Decree, believed to be the night on which the Qur'an's revelation began. Its exact date is not fixed; it is sought particularly on the odd-numbered nights of the last ten. Many people increase their prayer, Qur'an reading, and charity in those nights. It is considered the most significant night of the year.
Giving in Ramadan
Charity runs through the whole month. Many Muslims choose Ramadan to pay zakat, the obligatory annual giving calculated on their savings, because the month concentrates their attention on people in need. Before the month ends, a specific charity called Zakat al-Fitr is given so that people who would otherwise go without can also eat and celebrate on the day of Eid.
In Faith Map, Ramadan mode follows the month with Suhoor and Iftar countdowns for your own location, so the two meals that frame each fast are always in view, alongside the Qur'an to read through the month. Reading and lessons in the app are free.
Eid al-Fitr: how Ramadan ends
The morning after the last fast, the month closes with Eid al-Fitr, the festival of breaking the fast. People dress in their best, attend a morning prayer, visit family and friends, give gifts and money to children, and eat, in daylight, without a second thought. The greeting you will hear is Eid Mubarak: blessed Eid.
If you know someone observing Ramadan, a simple Ramadan Mubarak at the start, and an Eid Mubarak at the end, will almost always land warmly. Your faith is beautiful is something Muslims hear in the way this month is kept: discipline and generosity, hunger and hospitality, held together for a whole month at a time.
Frequently asked questions
How long does Ramadan last?
Ramadan lasts twenty-nine or thirty days, depending on the sighting of the new moon that ends it. It is the ninth month of the Islamic lunar calendar, so it begins about eleven days earlier each solar year.
Can you drink water during Ramadan?
No. The fast from dawn to sunset includes water and every other drink, as well as all food. Drinks are taken freely between iftar, the sunset meal, and suhoor, the pre-dawn meal.
Do all Muslims have to fast in Ramadan?
Fasting is expected of adult Muslims who are able, but the exemptions are built in and widely used: children, people who are ill or elderly, travellers, women who are menstruating, and pregnant or breastfeeding women in relevant circumstances do not fast. Missed days are usually made up later, called qada, or, where fasting is not possible at all, replaced by fidya, feeding people in need.