Kindly verify whether you have experimented with adjusting the "prayer calculation method" and the "high latitude method." These methods are the primary factors contributing to variations in Fajr and Isha prayer timings.
It's important to bear in mind that different prayer times websites may employ distinct formulas and sets of parameters, resulting in varying outcomes. Consequently, prayer times obtained from one source may differ when compared to another, whether that source is another website or a timetable provided by your local mosque.
Prayer times are established through a rigorous calculation and formula that consider multiple factors, including the latitude and longitude of a specific location. Consequently, variations in prayer times can arise when different organizations use these calculations, resulting in approximations that may differ.
Additionally, in regions with high latitudes, discrepancies in prayer times are even more pronounced, particularly during the summer months.
As a result, the introduction of the high latitude method became necessary to provide a practical approximation.
To determine Isha and Fajr calculations, one needs to calculate the time when the sun is at a certain distance below the horizon. The twilight angle is used for this purpose and it is defined as the angle in degrees of the sun below the horizon, when total darkness begins or ends.
Some organizations' use a fixed time after Maghrib to determine the start of Isha time.
Several standards have been established for determining Fajr and Isha prayer times.
Region | Africa, Syria, Iraq, Lebanon, Malaysia, parts of the USA |
Fajr – twilight angle | 19.5 |
Isha – twilight angle | 17.5 |
Region | Parts of the USA, Canada, parts of the UK |
Fajr – twilight angle | 15 |
Isha – twilight angle | 15 |
Region | France |
Fajr – twilight angle | 12, 15 or 18 |
Isha – twilight angle | 12, 15 or 18 |
Region | Singapore |
Fajr – twilight angle | 20 |
Isha – twilight angle | 18 |
Region | Europe, Far East, parts of the USA |
Fajr – twilight angle | 18 |
Isha – twilight angle | 17 |
Region | The Arabian Peninsula |
Fajr – twilight angle | 18.5 |
Isha – twilight angle | 90 minutes after Maghrib (120 minutes during Ramadan) |
Region | Pakistan, Bangladesh, India, Afghanistan, parts of Europe |
Fajr – twilight angle | 18 |
Isha – twilight angle | 18 |
These are the 2 schools of thoughts for determining the start of Asar prayer times.
These 2 schools of thoughts use different criteria to determine the start of Asar prayer. They do not affect the timings of the other prayers.
Shafi: The start of Asar is when the shadow of any vertical object exceeds the length of an object.
Hanafi: The start of Asar is when the shadow of any vertical object exceeds twice the length of an object.
Usually Hanafi Asar time is approximately 1 hour later than Shafi Asar prayer time.
The times of the prayer are determined by the position of the sun, i.e. by defining the above in astronomically measurable terms.
However for countries above 48 degrees (including Britain), Fajr and Isha timings require some estimation as the twilight may persist between sunset and sunrise for certain months of the year.
In these months the sun does not go below the horizon by a sufficient amount and so there is no true night.
Under these circumstances Salahtimes uses the 1/7 rule method by default (for UK) to calculate the Fajr and Isha times respectively, although you can change this to an alternative method.
Muslims pray 5 times a day. The times of each prayer vary from place to place and from day to day. It is vital that Muslims perform these prayers at the correct time.
The 5 prayers are described below:
Fajr:
Starts at dawn or morning twilight
Ends just before sunrise
Zohar:
Starts at approximately 5 minutes after Zawaal
Ends at start of Asar time
Asar:
The start of Asar is dependant upon the length of the shadow that is cast by an object.
Different schools use different criteria.
Ends just before sunset
Maghrib:
Starts at sunset
Ends at the start of Isha (i.e. when there is reddishness in the sky)
Isha:
Starts after dusk
Ends when the evening twilight disappears (i.e. when it first starts to get light)
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SalahTimes is a free online service that employs mathematical formulas to calculate prayer times.
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