2 Building Permits for Winnebago, MN View All ; In 2007, the city of Winnebago, MN issued 2 building permits. All permits issued were for Single Family Homes. All permits issued were for Single Family Homes. In 2006, the city of Winnebago, MN issued 3 building permits. All permits issued were for Single Family Homes.
The amount of time you have to wait depends on the weather. 1  If there are only little clouds in the sky, it takes 6 hours. 2  If there are about 50% or more clouds, you have to expose the bottles for 2 days to the sunlight. 3  If it is raining all time, this method doesn't work.
This date coincides with the summer solstice which has the longest daylight period of the year (the shortest in the southern hemisphere.) On the day of the summer solstice, the north pole gets 24-hours of sunlight, while the south pole gets 24-hours of darkness!