The correct answer to this open question is the following.
The complete question asks us to record in a calendar the events of the moon cycle and during storming weather.
So in the case of the moon, we can record the time that passes from the last new moon to the next new moon, and also from the last full moon and the next full moon. In the case of the weather and storms, we can record the amount of rain that falls and can compare it to another rainy season in other years.