Privacy Policy
Last updated: July 28, 2026
SunTime is a browser extension built to help you track sunlight and align your routine with your circadian rhythm. This page explains what data the extension uses, why, and who it's shared with.
What we collect
To calculate sunrise and sunset, SunTime uses your location — obtained through your browser's geolocation API (with your permission) or a city you enter manually. We also save your preferences locally: chosen location, widget position on screen, preferred search engine for the new tab page, and time format (12h/24h).
Where your data is stored
All preferences are saved only in your browser, through the extension's local storage (chrome.storage.local). SunTime has no server of its own, requires no login, and keeps no database of user information.
Sharing with third parties
To work, SunTime sends your location (coordinates or city name) to two public APIs: api.sunrisesunset.io, which calculates sunrise and sunset times, and geocoding-api.open-meteo.com, used only when you type a city manually, to convert it into coordinates. These requests contain only what's needed to respond — we do not sell, share, or use your data for advertising, credit scoring, or any purpose unrelated to the extension.
Remote code
SunTime does not load or execute remote code. All code ships bundled inside the extension, exactly as it was reviewed and published on the store.
Your control over your data
You can change your location at any time in the extension's settings. Uninstalling SunTime or clearing your browser data erases all locally saved preferences.
Chrome Web Store — Single purpose
SunTime has a single purpose: show the user how much daylight is left and the sunrise/sunset times based on their location, to help align their routine with their circadian rhythm. This is shown in three places: a toolbar popup, a custom new tab page, and a small floating widget on visited pages.
Chrome Web Store — Storage justification
The storage permission is used to save the user's preferences locally in the browser only (chrome.storage.local): chosen location, widget position on screen, preferred search engine for the new tab page, and time format (12h/24h). There is no user account, login, or sync with an external server.
Chrome Web Store — Geolocation justification
The geolocation permission is used to get the user's current location, with the browser's authorization, to accurately calculate sunrise and sunset times for where they are. As an alternative, the user can type a city name manually instead of granting the permission.
Chrome Web Store — Host permission justification
The match pattern *://*/* is used by the content script to show a small, unobtrusive floating widget on any visited page with the remaining daylight. Without this permission, the widget could only appear in the popup or the new tab page, not during regular browsing.
Chrome Web Store — Are you using remote code?
No, we are not using remote code. All of the extension's JavaScript is bundled at build time and shipped with the extension package — there are no external scripts, remote modules, or eval() calls on content fetched from the internet.
Chrome Web Store — Data usage
Data collected: Location only (approximate location or GPS coordinates, used to calculate sunrise and sunset times). No other category is collected (no personally identifiable information, health, financial, authentication, personal communications, web history, user activity, or website content). Certified disclosures: we do not sell or transfer user data to third parties outside of approved use cases; we do not use or transfer user data for purposes unrelated to the item's single purpose; we do not use or transfer user data to determine creditworthiness or for lending purposes.
Contact
Questions about this policy can be sent to rafael@santinc.com.