Hmmm, very interesting, NanKate! I see the calendar year as four rows, each consisting of three months, working down from the top. (Top row is Jan - March, below that is April - June, and so on...) and I just assumed that was how everybody saw it, but obviously not! Days of the week are all in a line, beginning with Monday and I can see two weeks at a time.
Years are in rows of tens - the 20th century is a vertical stack of 10 rows working upwards, each reading from left to right, however... this century has started with 2001 to 2010 reading from right to left and 2011 onwards positioned above, going left to right. So, when it gets to 2021, I presume I'll do a sharp left turn and start moving right to left again in a sort of squared-off spiral! 
Sadly, no colour anywhere!