How do you change the date on a peugot 206?

To change the date on a Peugeot 206, turn on the ignition without starting the engine. Press and hold the "Mode" button on the dashboard until the display starts blinking. Use the "Set" button to navigate to the date setting, then adjust the date using the "Mode" button to increment the numbers. Once set, press "Set" again to confirm and exit the adjustment mode.