This is a method of predicting the weather which goes way way back into antiquity. The weather of the first 12 days of August is observed and noted in detail. Each day represents one month of the coming year.
Wind means unsettled weather that month.
White slow moving clouds forecast rain
White clouds racing across the sky mean snow
and so on
Of course meteorolgists poo-poo the idea but farmers and country people who observe the sky and mother nature live by these predictions
However, there is a bit of an argument over which days of August should be watched. Because this way of forecasting goes so far back into history there are many who argue that the days observed should be from the 14th to the 25th August. In 1582 the modern world changed from the Julian calendar to the present day Gregorian calendar. The Julian calendar is 13 days behind hence the days of August being watched should start from the 14th.
So what do the 'merominia' say for this winter?
The weather each day has to be watched closely for 24 hours. For instance if it rains on the 18th August in the evening it means that the last days of December the weather will be unsettled.
Observations are still going on
Note Well - No work must be done while the days are being viewed.
A wood chopper's wood will rot if he cuts during August. Clothes that are washed will fall apart.
Marriages should not take place
Women must not wash their hair at night or leave the house
More days of idleness for the Greeks!