Hanafi and Shafi Asr times explained

If you have ever switched the Asr setting in a prayer app, you have seen the afternoon prayer move by the better part of an hour. Asr, the afternoon prayer, is the one time in the daily schedule where two long-established positions in Sunni scholarship lead to clearly different start times. Apps usually label them "Standard" or "Shafi", covering the Shafi, Maliki and Hanbali schools, and "Hanafi".

This page explains where the two times come from and how to check which one a timetable uses. It does not decide which one you should follow. That depends on the madhab (school of jurisprudence) you follow and the practice of your community, and your local imam or teacher is the right person to ask. AyahFlow, the app we build at BRUNIQO, shows prayer times as estimates based on your settings and your device's location, and it is not a religious authority.

The shadow rule in plain words

Picture a vertical stick standing in the sun. In the morning its shadow is long. It shrinks until the sun reaches its highest point at solar noon, then grows again through the afternoon. The shadow at solar noon is rarely zero: in the contiguous US and Alaska it points north and always has some length, longer in winter when the sun stays low and shorter in summer when the sun climbs high.

Both rules measure the afternoon shadow against the object's height, starting from that noon shadow:

• Standard rule (Shafi, Maliki, Hanbali): Asr begins when the shadow equals the object's height plus its noon shadow.
• Hanafi rule: Asr begins when the shadow equals twice the object's height plus its noon shadow.

Take a stick 3 feet tall whose noon shadow is 1 foot long. Under the standard rule, Asr begins when the shadow reaches 4 feet. Under the Hanafi rule, it begins when the shadow reaches 7 feet. Because the shadow keeps growing through the afternoon, the second length is always reached later, so the Hanafi start always comes after the standard start.

How big the gap is

The distance between the two start times is not fixed. It depends on how quickly shadows grow in the afternoon, and that depends on how high the sun climbs. In summer, when the sun is high, shadows lengthen slowly after noon, so the gap is wide. In winter, when the sun stays low, shadows lengthen quickly and the gap narrows.

To make this concrete, we calculated both start times for several US cities through 2026. The results follow the same seasonal shape everywhere.

The figures show how much later the Hanafi start falls than the standard start. They come from our own calculation for city-center coordinates, so your location will give slightly different values, but the pattern holds: the gap is smallest in winter, largest in summer and in between in spring and fall.

Why the two positions exist

Both rules go back to classical discussions among jurists about how to understand the descriptions of Asr's beginning. Both are long established in Sunni scholarship and have been followed by large communities for centuries. They are not two attempts at calculating the same moment, one right and one wrong. They are two recognized positions, each with its own scholarly tradition, which is why calculators simply offer both.

Shia communities that follow the Jafari school use their own conventions and timetables. If you pray at a Shia center, its published times are the reference.

Checking which rule a timetable uses

You can often tell which rule a timetable uses without asking. Compare the Asr time on the timetable with both settings in a prayer calculator for the same location and date. The setting that matches within a few minutes is the rule the timetable follows. Some timetables list both starts side by side, sometimes labeled "Mithl 1" and "Mithl 2", from the Arabic word for "equal to", referring to one or two shadow lengths.

If your tool and your mosque differ at Asr only, by roughly the amounts in the table above for the current season, while the other four prayers match, you have almost certainly found the cause. Our guide on why prayer times differ from the mosque timetable covers the other common causes.

Planning an afternoon around Asr

For many people in the US, Asr falls inside the working or school day for much of the year. In winter both start times come early in the afternoon, and the window after Dhuhr can feel short. In summer, particularly with daylight saving time, the later Hanafi start can land close to or after the end of a typical workday. Knowing which rule you follow, and how the gap changes through the year, makes it easier to plan a short break at the right time. A glance at the coming week's Asr times on a Sunday evening is often enough to see which afternoons need a little extra planning.

This page does not cover when the Asr window ends or which times within it are preferred. Those are questions of jurisprudence, best taken to your imam or teacher rather than to an app.

How AyahFlow fits in

AyahFlow's prayer schedule is an estimate based on your settings and your device's sensors, like any calculator's, and the app asks you to verify locally whenever accuracy matters. Before relying on it for Asr, compare it once with your local timetable as described above. If the two differ at Asr only, the difference between the two rules is the most likely reason, and your mosque or community is the reference for which one to follow.

For the astronomy behind all five prayer times, see how prayer times are calculated, or return to the AyahFlow overview.