Economic risk is a nebulous term with a variety of definitions. In a nutshell, it is the risk that an endeavor will be economically unsustainable, for a variety of reasons ranging from a change in economic trends to fraudulent activities which ruin the outcome of the project.
The summer solstice arrives Sunday June 21. Those of us in the Northern Hemisphere know it as the longest day of the year.
There are two solstices, summer and winter, and two equinoxes, spring and fall, each year. The longest day of the year is the summer solstice, on the 21st or 22nd of June in the Northern Hemisphere. In this case, day means the time between sunrise and sunset. The winter solstice is the shortest day of the year. At each equinox, day and night are of equal length.