We set the default location for the entire site as Dublin, NH, (home of The Old Farmer's Almanac) when we can't automatically deduce your location from your IP address.
You can change the default location for the entire site by entering a location in the text box in the top right corner of the website underneath the Weather, Rise & Set, and Moon Phases tabs.
You can change the location for any tool on the site independently of the default location. For instance if you have a boat on the ocean you can set the tides for your boat location and the weather for your home location.
You must have cookies enabled in your web browser for the website to remember any of your location settings.