The will occur over 30-50 days, starting on 4/27-- it'll end roughly between 6/1/15 - 6/15/15.
Note the inner diagonal that's occurring as this chart is being posted. Target 1430 CNY then reverse.
This chart is dedicated to @user100000, @scamcoins and all the other people who use the X wave to fill things in when they don't understand what's up. Knowing when you don't know is the path to success in any endeavor and part of being a complete person. You can't just slap on an X wave and call your marriage happy.