Sophie sat down on the floor and raised her hand. "Well, since we only have up to 9 numbers, every other 9 days will be the same number we needed." that was pretty simple, wasn't it? Sophie wasn't sure if she had put it in a understandable way though. "I mean, my month number was 2, so if I got number four, for example, the day would be the 2nd, because 2 + 2 = 4." Obviously. "I could think of another day that, if I summed up the numbers, I'd get 2. Like 11th and 20th. Or I could just use the 9-day pattern I said before. 29th should work too, then."

She looked around. Did that make sense? Well, it did to Sophie, at least.