Hehhe the lunar calendar is more complicated than that, not just
+ or - a month. ..
If you get the chance to see the old style chinese calendars ,
those flipping pages type with thin paper... they state chinese
dates, and the good and bad aspects of the day . e.g. suitable for
moving house, not lucky for travelling, etc.
Some western calendars also include chinese dates... these are
represented by numbers written in chinese.
Actually if you're going into the wedding industry in Sg, the lunar
calendar is important because there are taboo months e.g. 7th
month, and super lucky and hot dates for weddings ... all according
to the chinese calendar 
