If you want to set time and date on Opel / Vauxhall Corsa C, Holden Barina, Chevrolet Corsa, Opel Vita, watch the video tutorial below.
1. Turn the ignition on or start the engine
2. Press and keep pressing for 2-3 seconds on the timer button
3. Set the date and time using those two buttons
4. Turn the key off.