Privacy
SunAndMoon is built to need as little of your data as possible. Today it carries no advertising, no analytics and no cookies of its own. This page explains exactly what happens when you use the site, and what would change if that ever did.
Everything is computed in your browser
Every sunrise, sunset, golden hour and moon time you see on SunAndMoon is calculated locally on your device with an open source astronomy library (SunCalc). The cities you search for and the dates you pick are not sent to a server to work out those times, because the site is a set of static pages with no application server behind it.
Cookies, analytics and advertising
There are none. SunAndMoon sets no cookies of its own, loads no advertising, and runs no analytics script that follows you across sites or builds a profile. This is the same promise the about page makes, and the two pages are meant to say the same thing. It does not require an account and it does not sell your data, because it holds no data to sell.
The one thing the site stores on your device is a small amount of browser local storage: the last city you looked at and your manual sky setting, so the site opens where you left it. That never leaves your browser and is not a tracking cookie. Clearing your site data removes it.
Because nothing non-essential is set, there is no consent banner to click away. If advertising or analytics were ever switched on, this page would be rewritten first, visitors in the European Economic Area and the United Kingdom would be asked to accept or decline before anything was set, and the no-ads claim on the about page would be removed at the same time.
No accounts
There is nothing to sign up for and nothing to log in to. The site never asks for a username, password or payment details.
Hosting
The static pages are served by Vercel, our hosting provider. Like any web host, Vercel processes standard technical request data (such as your IP address) to deliver the pages and protect the platform. You can read more in Vercel's privacy policy. We do not receive or store that data ourselves.
Questions
If you have a question about this policy, use the contact page. SunAndMoon is built and operated by FusionStudios, which is the party responsible for the handling described here and the controller for the purposes of the GDPR.
Changes
If the way the site works changes, for example if advertising or analytics were ever switched on, this page would be updated first and this date would move with it.
Last updated: 4 August 2026.