Hi, Kinda problem with RTClib.h : 'now' was not declared in this scope

Well, i'm trying to use DS3231 as timer to do something on time. And i'm still getting this error : 'now' was not declared in this scope. I have attached my sketch. And here is error code :

Build options changed, rebuilding all
C:\Users\nesvy\Desktop\RTC\RTC.ino: In function 'void loop()':

RTC:29: error: 'now' was not declared in this scope

if ( now.hour() == 19 & now.minute() == 54 & now.second() == 0) {

^

exit status 1
'now' was not declared in this scope

Sorry if it is something easy, but i'm pretty much begineer. Thanks for every help.

RTC.ino (609 Bytes)

You have an instance of the RTC_DS3231 class called rtc.

You do not have an instance, of any class, that is called now. Without an instance, you can call methods on that instance.

 if ( now.hour() == 19 & now.minute() == 54 & now.second() == 0) {

Time to learn the difference between bitwise AND (&) and logical AND (&&).