Nintendo DSi & Nintendo DSi XL - Settings - Date

You can set the system's date. Some games may use the date feature, so it is recommended that you enter the correct date.

How to change the date

1. On the Nintendo DSi Menu, use the stylus to select the Settings ("wrench") icon.
2. Select the right arrow to go to page 2, then select "Date."
3. Tap the up/down arrows to change the date, then select "OK" to confirm.