That the ninth wave is 18 days long essentially follows mathematically from the structure of Bolon Yokte Kuh, the nine-storied pyramid. When it comes to its continuation you may read a couple of old articles: “http://calleman.com/content/articles/SomeNewReflections.htm and http://www.calleman.com/content/articles/The9thWaveContinues.htm
Visit the 9th Wave Universal Frequency Calendar on FACEBOOK for weekly updates on DAY KEEPING
http://www.2near.com/edge/carl/
http://www.4-ahau.com/Home.html
http://ahau.pagesperso-orange.fr/Tzolkin_wave_calendar_HI.jpg