Hey Jodsan, I had another question about the Jonas method. I checked to see my fertile day for June, my chart is predicting O on the 16th. Jonas calendar shows the 16th, but says fertile 24 hours before date shown (which would make my fertile day right on my predicted O day!). But here's my question: under the lunarium calendar the only date that shows my moon sign is June 6th--what's the difference between the lunarium calendar and the Jonas calendar? Does that mean I could possibly conceive on the 6th and the 15th? Thanks, I'm sorry to always burden you with so many questions--I appreciate your opinion very much!