DS4 knows calender/time very well

If I don't know what the date is , he will tell me

Also he remeber's me family mememer's, his friends, teacher's birthday, so I won't miss the birthday card

He remeber me the bus coming in a few mins, so I won't miss it

He tell me how to get to friend's home when I got lost

He tell me where to get eggs in super market and how much are they...or something on special, cause 20% off..

How handy is THAT!!!:-)