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
Romanian months the months. Five are derived from the Latin names now used in the Gregorian calendar (and earlier in the Julian calendar). However, each of these has a folk etymology and an additional meaning. The last month, December, derives its name from that of Saint Andrew. Romanian months The traditional Romanian calendar has its own names for the months, which are otherwise identical to those of the Gregorian calendar. In modern Romania and Moldova, the latter exclusively is used for business and government transactions, and predominates in popular use as well. Nevertheless, the traditional names of the months do appear in