Your mosque’s timetable comes first. This only measures how close a calculation gets.
Step 1
Choose your place
No scholar or imam has reviewed this site.
Questions
Why does it ask me to check again each month?
A mosque’s timetable and a formula rarely move together through the year. In our test a Birmingham timetable sat up to 22 minutes from the nearest setting at Fajr on some dates, and close on others. A check in June says little about December.
Are the times I type sent anywhere?
No. They stay in this browser. If you make a share link, they sit after the # in the link, which browsers do not send to web hosts. Whoever receives the link can read them.
What if no setting fits?
Then the fit error says so. Some mosque timetables follow local decisions no formula here reproduces. Use the mosque’s timetable.