Seasonal Adjust, also known by municipalities as Water Index, is used to make global run time changes without reprogramming the entire controller and is perfect for making small changes that are necessary as the weather changes throughout the year.

Please keep in mind that these run times are based on your area's hottest month. You will need to adjust water usage as temperatures cool and heat up. You can either do this manually, through your seasonal adjustment feature on your controller (select models only) or through a weather sensor, such as the Solar Sync.

Climate data for

• NAN% Jan
• NAN% Feb
• NAN% Mar
• NAN% Apr
• NAN% May
• NAN% Jun
• NAN% Jul
• NAN% Aug
• NAN% Sep
• NAN% Oct
• NAN% Nov
• NAN% Dec

For instance, during hotter times of the year, the landscape may require a bit more water. Seasonal Adjust can be increased so the stations run longer than the programmed time. Conversely, as fall approaches the Seasonal Adjust can be reduced to allow for short watering durations. This overall percentage based change applies globally to all Run Times on the controller. For example: If your Run Times in the summer are set for 1 hour and you adjust the Seasonal Adjust to 50%, your Run Times will now change to 30 minutes.

Test the soil in the target area after all grading operations are complete and amendments have been incorporated. If a laboratory soil analysis is not possible, a simple field test to determine soil texture is to place a sample in a jar and fill half-way with water. Thoroughly shake the jar, ensuring the soil is suspended. Allow settling for at least 2 hours, then measure each layer to determine the percentage of each type (in ascending order: sand, loam. and clay).

The run times generated are based on peak seasons (hottest month) conditions. Seasonal adjustment recommendations are provided as a reference to make controller adjustments throughout the year.

Our calculator displays a Seasonal Adjust Graph and a real-time display for your customers to use all year. We even include documentation and videos to teach users about the importance of returning to their controller to make seasonal adjustment changes. We also promote adding a Solar Sync to handle seasonal adjustment automatically.

Each account you setup can be adjusted for your local watering restrictions. Choose the days of the week your area allows for watering, or time of day restrictions, or odd/even restrictions. Your customers schedules adjust to accurately reflect these restrictions while maintaining an optimal watering schedule for each of your customers Run Time.

When you setup your account, each schedule you create is setup to help you brand your business. We’ve included an area on the printout for you to stamp your logo or attach your business card. At the top of each schedule, a note identifies your or your business as the professional who created the schedule.

Use this tool on any computer device including desktops, smartphones or tablets.

• Convert schedules into door card versions with one-click.
• Print & email schedules is as simple as possible.
• QR Code Ready: Each schedule includes a QR code your customer can use to scan to easily access the schedule you created for them.

Your free account allows you to setup a schedule for each of your customers. Whether you're using a Hunter controller or not, you can create a schedule for any project and name it to best describe your customer, such as "John Smith Residence", "Downtown Market" etc.

The Hunter Run Time Calculator allows you to choose your location from a list of cities OR select a region that best matches your area for northern or southern hemispheres.

If your city or state is not listed, you still have the option to use your region instead (based on your maximum summertime temperature).

• Region 1: 65° – 75°F (18° – 24°C)
• Region 2: 75° – 85°F (24° – 29°C)
• Region 3: 85° – 95°F (29° – 35°C)
• Region 4: 95° – 105°F (35° – 41°C)