How do i change the time and date on my Sansung GT-B5722, it is set on the 01 01 2009?

You may wanna try this:

Create and view world clocks Learn to view the time in another region and set world clocks to appear on your display.
Create a world clock
1. In Menu mode, select World clock.
2. Select Add.
3. Scroll left or right to a time zone.
4. To set daylight saving time, select .
5. Select Add to create your world clock.
6. To add more world clocks, repeat steps 2-5 above.
Add a world clock to your display
With the dual clock widget, you can view clocks with two different time zones on your display.
After you have created world clocks,
1. In Menu mode, select World clock.
2. Select the world clock you want to add and select More → Set as 2nd clock.

Here are the steps to correct the time and date on a Samsung GT-B5722 cell phone.
1. Menu
2. Settings widget
3. Time and date
4. Deactivate the Automatic time update
5. Scroll down to the Time window and tap on it
6. Enter correct time from keypad
7. Save
8. To change date, repeat steps 5, 6, and 7 for the Date window