Winter solstice one must be able to observe a change in azimuth or elevation less than or equal to about 1/60 of the angular diameter of the sun. Observing that it occurred within a two-day period is easier, requiring an observation precision of only about 1/16 of the angular diameter of the sun. Thus, many observations are of the day of the solstice rather than the instant. This is often done by observing the sunrise and sunset or using an astronomically aligned instrument that allows a ray of light to be cast on a certain point around that time. Length of day
Dump months the summer seasonal jobs end, just as with the winter dump months, and moviegoers under the age of 24, who make up 41% of the audience, a larger share than their overall portion of the population, begin to return to school. Tuition payments, and retailers' back-to-school sales further cut into movie grosses; Huntington Bank's annual Backpack Index found in 2017 that costs for school supplies and activity fees, not including taxes or clothing, ranged from $662 for elementary-school students to almost $1,500 for those in high school. "The prevailing wisdom is that people don't go to the movies in August"