✨ Caelus • Privacy Policy
December 16, 2025 10:52:34 UTC+01:00 [48.85° N, 2.35° E]
Privacy Policy
Last updated: 2025-10-31
This Privacy Policy explains how we collect, use, and protect your personal data when you use this website.
1. Who we are
Rémy Hannequin, the owner and operator of this website.
If you have any questions about this Privacy Policy, you can contact us at:
remy.hannequin@gmail.com.
2. What data we collect
If you choose to submit the location form, we collect and store the following information:
- Latitude and longitude
- Time zone (IANA identifier, e.g., Europe/Paris)
- Custom date and time
This information is stored in a signed cookie on your device. It is not shared with third parties and is not used for advertising or tracking.
3. Why we collect this data
We collect and store this data to provide you with personalised features: adjusting content to your local time zone or location.
4. Legal basis for processing
The legal basis for processing your location data is your consent, which you give by submitting the location form. For cookie consent preferences, we store your choice (accept or reject) to remember your preference and avoid showing the consent banner repeatedly. This is allowed under GDPR as it serves a legitimate interest in providing a better user experience. You can withdraw your consent at any time (see Section 7 below).
5. How long we keep your data
Your location data is kept only in your browser cookie and is automatically deleted when the cookie expires after 12 months or if you clear your cookies.
6. How we protect your data
The cookie is signed to prevent tampering. Your data is not transmitted to third parties.
7. Your rights under GDPR
You have the following rights regarding your personal data:
- Access: You can request to know what data we store about you.
- Erasure: You can delete the cookies at any time by clicking this link: . You can also do it manually in your browser settings.
- Withdraw consent: You may withdraw your consent by or disabling cookies in your browser.
- Restriction/objection: You may ask us to stop processing your data.
To exercise any of these rights, please contact us at remy.hannequin@gmail.com.
8. Changes to this Privacy Policy
We may update this Privacy Policy from time to time. We will update the "Last updated" date at the top of this page whenever changes are made.
9. Cookies and Local Storage
This website uses cookies and local storage to store your preferences and settings. We use the following types of storage:
- Essential cookies: Required for the website to function properly
- Preference cookies: Store your location and timezone settings for personalised astronomical calculations
- Consent cookies: Remember your cookie consent preference
Storage Details
| Name | Purpose | Duration | Type |
|---|---|---|---|
cookie_consent
|
Stores your cookie consent preference (accept/reject) to remember your choice | 1 year | Cookie |
latitude
|
Stores your latitude for astronomical calculations | 1 year | Cookie |
longitude
|
Stores your longitude for astronomical calculations | 1 year | Cookie |
time_zone
|
Stores your time zone for accurate date/time display | 1 year | Cookie |
time
|
Stores your custom date/time setting for astronomical calculations at specific moments | 1 year | Cookie |
theme (localStorage)
|
Stores your dark/light mode theme preference | Until cleared | Local Storage |
All cookies are first-party cookies and are not shared with third parties. Local storage data is stored locally in your browser and is not transmitted to our servers. You can manage your cookie preferences at any time through your browser settings or by using the data deletion link provided in Section 7. Local storage can be cleared through your browser's developer tools or privacy settings.
What happens if you reject cookies?
If you reject cookies, the website will still function but will use default location settings (Paris, France) and won't remember your location preferences between visits. However, we do store your rejection preference to avoid showing the consent banner repeatedly. You can still use all features of the website without location cookies. Theme preferences stored in local storage will continue to work even if cookies are rejected.
10. Local Storage
This website uses browser local storage to enhance your user experience by remembering certain preferences:
Local storage is used to store your theme preference (dark or light mode) locally in your browser. This data:
- Remembers your theme choice across all pages and browser sessions
- Provides instant theme switching without page reloads
- Works offline and doesn't require server communication
- Is automatically applied when you return to the website
Local storage data is:
- Stored locally on your device only
- Not transmitted to our servers
- Not shared with third parties
- Accessible only by this website
You can manage or clear local storage data through your browser's developer tools or privacy settings. Clearing local storage will reset your theme preference to the default setting.