Cookies & GDPR Policy

What are Cookies?

Cookies are small text files that are stored on your computer or device when you visit a website. They are used to improve your experience and provide functionality.

Cookies We Use

Essential Cookies

• userLocation: Stores your manually selected location data (latitude, longitude, location name, and timestamp) to accurately calculate sunrise/sunset times and ideal propagation hours for each radio band. This cookie is stored for 30 days and is only created when you manually set your location.

These cookies are essential for the website's functionality and cannot be disabled. However, you can delete them at any time through your browser settings.

How to Manage Cookies

You can manage or delete cookies through your browser settings. Please note that disabling certain cookies may affect the website's functionality.

To delete your location: You can delete the "userLocation" cookie from your browser settings, or simply set a new location which will overwrite the existing one. The cookie will automatically expire after 30 days if not updated.

Cookie Contents: The userLocation cookie stores the following information in JSON format:

• Latitude and longitude coordinates
• Location name (city name or grid square)
• Timestamp of when the location was set

Contact

This website is operated by SV5FRI.

What Data We Collect

• Location Data: We do not automatically collect your location. Location data is only stored if you manually choose to set your location through one of the following methods:
  • Selecting a city from the dropdown list
  • Searching for your city
  • Entering your Grid Square Locator (Maidenhead)
  • Entering your coordinates manually (latitude/longitude)
  This location data is used exclusively for calculating accurate sunrise/sunset times and ideal propagation hours for each radio band.
• Cookies: We use cookies to store your manually set location for 30 days, so you don't have to enter it every time you visit.

How We Use Your Data

• Location data is used only for calculating sunrise/sunset times and ideal hours for each radio band.
• We do not automatically detect or request your location through browser geolocation APIs.
• Location is set only when you manually choose to provide it.
• We do not share your data with third parties.
• We do not use your data for advertising or marketing.
• We do not collect any other personal data.

Your Rights (GDPR)

Under the General Data Protection Regulation (GDPR), you have the following rights:

• Right of Access: You can request access to your personal data.
• Right to Rectification: You can request correction of inaccurate data.
• Right to Erasure: You can request deletion of your data. You can delete the "userLocation" cookie from your browser settings.
• Right to Restriction: You can request restriction of processing of your data.
• Right to Object: You can object to the processing of your data.
• Right to Data Portability: You can request the transfer of your data.

Data Security

We take appropriate technical and organizational measures to protect your personal data. All location data is stored locally in your browser (cookies) and is never transmitted to external servers. The data remains on your device and is only used for calculations performed in your browser.

We do not use any external services to process your location data. All calculations (sunrise/sunset times, ideal hours) are performed locally using standard astronomical formulas.

Policy Changes

This policy may be updated occasionally. Changes will be published on this page with an update to the modification date.

Last updated: February 3, 2026

For any questions regarding personal data protection or to exercise your rights, you can contact:

SV5FRI

This website is a tool for amateur radio operators and does not collect or process sensitive personal data.