# Pay attention to the time bar!

During a soccer match there is a time bar that shows the time in minute and seconds.It is of the form $ab:cd$ where $ab$ shows the minutes for example $05$ and $cd$ shows the seconds for example $45$.Thus the time would be $05:45$.The soccer match lasts $90$ minutes and it is divided into two halfs each of $45$ minutes.

How many times does it happen during the match that the time bar is of the form:$ab:ba$ for some positive integers $a$ and $b$ including $0$?

Note:
Assume there wasn't any extra time at the end of each half.
The match lasts from $00:00$ to $90:00$.

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