![]() 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. Generic astronomy calculator to calculate times for sunrise, sunset, moonrise, moonset for many cities, with daylight saving time and time zones taken in account. Daylength also changes depending on latitude and, during winter, the higher the latitude, the shorter the days. Calculations of sunrise and sunset in Staten Island New York USA for September 2023. ![]() 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. 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. 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. Main World Clock Extended World Clock Personal World Clock Clock for Your Site UTC Time. ![]() Astronomy News Time Zone News Calendar & Holiday News Live events. 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. Sunrise, sunset and moon phases in over 282 locations all across Canada today. 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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