‘The eleventh of December,’ Néstor announced.
‘December!’ I replied. ‘That rules out my theory.’
‘Wait a moment,’ added James. ‘Your calculations are correct, but you haven't used the correct calendar. Forget about the Gregorian calendar that begins in January. The Incas were governed by the summer and winter solstices. However, we must remember that we are in the southern hemisphere, and the summer solstice is in December.’
‘That's true,’ said Néstor.
‘If we add the four figures together, we get twenty-two.’
‘That means there are only eleven days to go,’ Néstor announced.
‘Eleven days to what?’ I asked, not understanding.
‘On the twenty-second of December, the summer solstice occurs in the southern hemisphere,’ he continued. ‘It is the time of year when the sun is highest in the sk
