![]() The average day, a century ago, was 1.7 milliseconds shorter than today. Our tools will let you know, accurately, how long the daytime of a given day is going to be on any place of the world and how the daylength evolves during the year.Īs a curiosity, because of the decreasing rotation speed of the Earth, days keep getting a bit longer over time. Daylength also changes depending on latitude and, during winter, the higher the latitude, the shorter the days. In the north hemisphere, summer days are longer while winter days are shorter and dusk happens very early. DaylengthĪs you may have noticed, daylength or length of daytime varies over the year. This is distinguished from diurnal and nocturnal behavior, where an animal is active during. In zoology, a crepuscular animal is one that is active primarily during the twilight period, 1 being matutinal, vespertine, or both. With sunset we refer to the instant when the trailing edge of the Sun stops being visible and disappears below the western horizon in the evening. Look up crepuscular in Wiktionary, the free dictionary. The sunrise is the exact instant at which the upper edge of the Sun becomes visible over the eastern horizon, in the morning. For example at Arctic and Antarctic latitudes, on winter, night never gets completely dark. Duration of twilight actually depends on our position on Earth and date of year. ![]() We can distinguish between the morning twilight, that happens between dawn and sunrise and the evening twilight, that happens between sunset and dusk each day. ![]() ![]() The time range during which the day becomes night or vice versa is called twilight. It's important to note that both sunrise and sunset are 'instants'. Our purpose is to make it easy to everybody to access Sun related information through simple tools that offers accurate information. Sunrise-Sunset is a free online tool that provides users information about day length, twilight, sunrise and sunset times for any location of the world. ![]()
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