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  2. Lighting-up time - Wikipedia

    en.wikipedia.org/wiki/Lighting-up_time

    Lighting-up times were formerly commonly displayed in national and local newspapers in the UK and announced on national and local radio stations, but the widespread adoption of street lighting has rendered this largely redundant. As a result, most of the previous sources no longer provide them, but may still provide sunrise/sunset times.

  3. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    The above relation implies that on the same day, the lengths of daytime from sunrise to sunset at and sum to 24 hours if =, and this also applies to regions where polar days and polar nights occur. This further suggests that the global average of length of daytime on any given day is 12 hours without considering the effect of atmospheric ...

  4. Get the London, England local weather forecast by the hour and the next 10 days. ... 8:03AM Sunrise. 89% Humidity. 29.71 in Pressure ... Dec. 18, 2024: Christmas travel delays are expected across ...

  5. Twilight - Wikipedia

    en.wikipedia.org/wiki/Twilight

    Twilight is the time period between dawn and sunrise, and between sunset and dusk. Morning twilight: astronomical, nautical, and civil stages at dawn. The apparent disk of the Sun is shown to scale. [1] Evening twilight: civil, nautical, and astronomical stages at dusk. The solar disk is shown to scale.

  6. Equinox - Wikipedia

    en.wikipedia.org/wiki/Equinox

    The times of sunset and sunrise vary with the observer's location (longitude and latitude), so the dates when day and night are equal also depend upon the observer's location. A third correction for the visual observation of a sunrise (or sunset) is the angle between the apparent horizon as seen by an observer and the geometric (or sensible ...

  7. Daylight saving time - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time

    Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.

  8. Sunset - Wikipedia

    en.wikipedia.org/wiki/Sunset

    Calculate the sunset time, which is the solar noon time plus the sunset hour angle in degree divided by 15; Use the sunset time as input to the solar geometry routine to get the solar azimuth angle at sunset. An interesting feature in the figure on the right is apparent hemispheric symmetry in regions where daily sunrise and sunset actually occur.

  9. Sunrise - Wikipedia

    en.wikipedia.org/wiki/Sunrise

    Time of sunrise in 2008 for Libreville, Gabon. Near the equator, the variation of the time of sunrise is mainly governed by the variation of the equation of time. See here for the sunrise chart of a different location. The timing of sunrise varies throughout the year and is also affected by the viewer's latitude and longitude, altitude, and ...