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
Six Months Ago Six Months Ago "Six Months Ago" is the tenth episode of the first season of the NBC science fiction drama series "Heroes". The entire episode is set six months before the series' premiere, displaying how all the characters initially developed their powers. Hiro Nakamura arrives at the Burnt Toast Diner six months in the past after attempting to go back only a single day. Charlie, the waitress he is there to save, serves him. Jackie arrives at Claire's bedroom and informs Claire that she got her the open cheerleading position. Jackie is surprised at Claire's lack of enthusiasm and threatens