I assume you are wanting the time to change by 1 minute for every link you click. If so, here is my recommendation:
Create two variables, HOUR and MIN. Put this at the beginning of your global link page:
%MIN := %MIN + 1
IF %MIN = 60 THEN
BEGIN
%MIN := 0
%HOUR := %HOUR + 1
END
IF %HOUR = 24 THEN %HOUR := 0