Frequently Asked Questions - Search for standards
View all our frequently asked questions
View all our frequently asked questions
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 organisations use a fixed time after Maghrib to determine the start of Isha time The following standards exist for determining Fajr and Isha times:
Some organisations use a fixed time after Maghrib to determine the start of Isha time The following standards exist for determining Fajr and Isha 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 |