Can someone answer this math riddle?

9360 days

It take 780 day just for the clock to fall on an exact hour (or a number divisible by 60):

13 (60)=780

Therefore after 780 days, the clock will be 13 hours behind. Taking into account a clock is right twice a day, it will only be 1 hour behind. It will take another 11 of these cycles (each adding another hour the clock is behind) for the clock to be 12 hours behind aka for the clock to match up with the clock.

Example: 780 days after that (1560 days total) the clock will be 26 hours behind. 26-24 hours= 2 hours behind

So:

780 + 11(780)=

12 (780)=

9360= the number of days it will take for the clock to be right again.

To all those who say 12:01 - This would only be correct if it were a digital clock. However "grandmother's clock," the clock repair, and the losing time implies an analog clock. The position of the "minutes" hand, and "second" hand if there was one, would not be in the correct position to have the correct time at 12:01

780 days

the person above me: the question says after it went into the repair shop it loses 13 minute a day

in about 5 years or so at 12 01

Umm.. I'd say 12:01 because if she set it correctly then it should stay :P

But why would it be 'broken' if it came back from the repair shop? XD im so confused

After 1440 days.

ummmmm lamest answer in the world but how about the moment she sets it right? I mean it's displaying the right time then isn't it?! LOL sorry kinda messed up right now in the head area.

at noon today when she sets it