Editorial Policy

How we write, check and correct what you read here, where our information comes from, and how advertising is kept apart from content.

What we write

We write the site’s text ourselves, for this site, and review it before it goes live. Each page answers one question clearly: the result first, then a worked example, then the method and its source, then common questions. We don’t publish near-duplicate pages that add nothing new.

Our sources

Images and illustrations

The illustrations are vector (SVG) art drawn for this site and generated in code; the moon in them is drawn from its real position. We don’t use AI-generated images or images taken from other websites.

Accuracy and corrections

Every calculation is tested automatically before publishing, and each page shows when it was last reviewed. If you find an error, send us the page link and the date or result you think is wrong from the contact page; we will check it, fix it and update the review date.

Advertising and independence

Your privacy in the tools

Results are calculated in your browser, so the dates you enter never reach us. Details are in the privacy policy.

Content and calculations last checked against the official Umm al-Qura calendar: