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  2. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    Earth-based: the day is based on the time it takes for the Earth to rotate on its own axis, as observed on a sundial [citation needed]. Units originally derived from this base include the week (seven days), and the fortnight (14 days). Subdivisions of the day include the hour (1/24 of a day), which is further subdivided into minutes and seconds ...

  3. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    It has since been set backward 8 times and forward 18 times. The farthest time from midnight was 17 minutes in 1991, and the nearest is 89 seconds, set in January 2025. [5] The Clock was moved to 150 seconds (2 minutes, 30 seconds) in 2017, then forward to 2 minutes to midnight in 2018, and left unchanged in 2019. [6]

  4. Day - Wikipedia

    en.wikipedia.org/wiki/Day

    A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours (86,400 seconds). As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes.

  5. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    In Unix time, every day contains exactly 86 400 seconds. Each leap second uses the timestamp of a second that immediately precedes or follows it. [3] On a normal UTC day, which has a duration of 86 400 seconds, the Unix time number changes in a continuous manner across midnight. For example, at the end of the day used in the examples above, the ...

  6. Light-second - Wikipedia

    en.wikipedia.org/wiki/Light-second

    Voyager 1 is about 0.94 light-days from the Sun (as of April 2024) light-week 7 light-days = 604 800 light-seconds 181 314 478 598 400 m: 1.813 × 10 11 km: 1.127 × 10 11 miles: The Oort cloud is thought to extend between 41 and 82 light-weeks out from the Sun light-year 365.25 light-days = 31 557 600 light-seconds 9 460 730 472 580 800 m: 9. ...

  7. List of Seconds from Disaster episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_Seconds_from...

    Days after residents of Guadalajara, Mexico complained of a foul smell, a series of gasoline-fueled explosions in the sewers kills 206 people. An investigation finds that the accident was caused by an improperly-routed water pipe producing humidity that corroded a steel pipeline, allowing gasoline to seep into the sewer system.

  8. Frame rate - Wikipedia

    en.wikipedia.org/wiki/Frame_rate

    The 720p format produces 59.94/50 or 29.97/25 1280×720p images, not squeezed, so that no expansion or squeezing of the image is necessary. This confusion was industry-wide in the early days of digital video software, with much software being written incorrectly, the developers believing that only 29.97 images were expected each second, which ...

  9. List of largest photographs - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_photographs

    It was shot from the Church of Saint-Sulpice by photographer Arnaud Frich using a CLAUSS RODEON VR Head HD panoramic head and two Canon 5D Mark II DSLR cameras with 300mm f4.0 lenses and two 2x tele converter (equivalent 600mm f8.0). The 2346 images of the project were then assembled using Kolor Autopano Giga software.