How do i change the time on my honeywell thermostat

The only time you can manually set the time and date on the Honeywell RTH9580WF (or any of the 9000 series color touchscreen models), is when the thermostat is not connected to Wi-Fi (the internet).  But when it is connected, it gets the time and date from the internet.  So in the connected times, you cannot set it yourself.  But when it is disconnected, you can.  Thus, this piece details how to change time and day on Honeywell RTH9580WF thermostat manually when the internet is not available.

1. Bring Up the Thermostat’s Home Screen

Note how it looks in the next picture, when the thermostat is disconnected from the internet.  No outdoor temperature and outdoor humidity display in this case.  It is ONLY in this case, that you can change the time and date manually.

2. Tap the Time/Date Square

This button is where the pink arrow points in the last picture.

3. Tap the   Set Time  Button to Continue with How to Change Time and Day on Honeywell Thermostat

The  Set Time  button brings up the  Set Time  screen, as shown next.

4. Use the   UP   and   DOWN   Arrow Buttons to Set the Time

Find these controls beside each of the Hour, Minute, and AM/PM fields.  The arrows beside the Hour field increase or decrease the hour number when pressed.  So too do the arrows near the Minute field, for the minute value.  And finally, the AM/PM arrows change the setting of this field from AM to PM and back again.

5.  When the Correct Time Displays, Press the   Done   Button

This returns you to the   Time / Date   screen, as shown next.

6. Tap the   Set Date   Button to Move Forward with How to Change Time and Day on Honeywell Thermostat

See the   Set Date   button location, pointed at by the pink arrow in the previous picture.

This brings up the   Set Date   screen, as shown next.

7. Use the   UP   and   DOWN   Arrow Buttons to Set the Date

beside each of the Month, Day, and Year fields.  The arrows beside the Month field increase or decrease the Month number when pressed, as do the arrows near the Day-of-the-month field, and the Year value.

8.  When the Right Date Displays, Press the   Done   Button

This returns you to the   Time / Date   screen, as shown next.

9. Tap the   Previous Menu   Button to Continue with How to Change Time and Day on Honeywell Thermostat

This takes you back to the  Home  screen, as shown next.  note that the displayed time and date now appear here as you set them.

10. Done with How to Change Time and Day on Honeywell Thermostat !

The thermostat day and time have now been manually set successfully.  However, remember that if you connect the RTH9580WF to the internet, it will erase your manual date / time settings, and update them to the current date and time as provided by internet time servers.

Other Posts About the Honeywell RTH9580WF Thermostat

1. Honeywell RTH9580WF WiFi Setup Instructions
2. Change WiFi Network on Honeywell Smart Thermostat RTH9580WF
3. How to Change Honeywell Thermostat Temperature Setting
4. Connecting Amazon Echo Dot to Honeywell Thermostats
5. How to Reset Honeywell Thermostat RTH9580WF

References for Change Time and Day on Honeywell RTH9580WF Thermostat

1. Honeywell RTH9580WF not updating time    from ThermostatForums.com
2. User Guide for the RTH9580WF Thermostat   from Honeywell

Revision History

• 2019-04-12: Added key phrase targeting, more tags, and removed ad code.
• 2017-03-03: Originally published.

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