If (In a certain period of time) how to make such a condition?

Question

Java

I have text that needs to change color at a certain time of the day (For example, from 9:00 to 10:20)

Date yourDateObject = new Date();;
        txt = (TextView) findViewById(R.id.textView3);
GregorianCalendar timeToCheck = new GregorianCalendar();
        timeToCheck.setTime(yourDateObject);
        int hour = timeToCheck.get(GregorianCalendar.HOUR_OF_DAY);

        if (hour >= 9 & hour <= 10) {
            txt.setTextColor(Color.GREEN);
    }

Everything works, but HOUR_OF_DAY Understands only Hours (Without minutes), and you need to enter the time with minutes.
There is also something like .MINUTE Tried to make a separate variable

...int min = timeToCheck.get(GregorianCalendar.MINUTE);
if (hour >= 9 & hour <= 10&(min <= 20)) {
            txt.setTextColor(Color.GREEN);
    }

But she does not understand the creature that these are exactly 10 minutes (10:20), as a result, at 9 o'clock the same garbage.
why is it so hard in java to just specify a span of time, how to do it???