how to check range of values in if statement

I am using Rtclib library for DS1307 RTC module.I want to check a condition if the minutes are between 0 to 15 i.e now.minute is in the range of 0 to 15 minutes along with the condition now.hour == 9.I am trying an argument if(now.hour == 9 && (now.minute >== 0 && now.minute<==15)).It is showing error how can i solve this?

if (now.hour == 9 && (now.minute >= 0 && now.minute <= 15))