Time questions This is a list of recently added questions about time. Play time quiz and see all the questions. Which planet’s day lasts longer than its year?Venus year (the time it takes it to rotate around the Sun) is equal to 225 Earth days, and its day (the time it takes it to rotate on its axis) equals 243 Earth days. Created by: Tschuka very hard 35% VenusVenus369MercuryMercury220Jupiter Jupiter 186NeptunNeptun253Solar System riddles » In what period of time does the Sun make a full turn around the center of the Milky Way?Within every 225 million years. The sun performs a full turn around the center of our galaxy during 225 million years.Created by: Tschuka very hard 26% within every 225 million yearswithin every 225 million years188within 250 million yearswithin 250 million years232within 300 million yearswithin 300 million years165within 350 million yearswithin 350 million years119Sun riddles » Who introduced the Gregorian calendar?Pope Gregory XIII. Gregory XIII was pope during the period from 13 May 1572 until 10 April 1585. The Gregorian calendar, also called the Western Calendar, was introduced by him in 1582 with the Bull Inter Gravissimas. The gregorian calendar basically a refinement of the Julian calendar. The Gregorian reform modified the Julian calendar's scheme of leap years, changing the mean length of the calendar year from 365.25 days to 365.2425 days.Created by: Krzysztof Moskaleasy 70% Pope Gregory I, called the GreatPope Gregory I, called the Great2618St. Gregory the IlluminatorSt. Gregory the Illuminator642Pope Gregory XIIIPope Gregory XIII10564GalileoGalileo1125popes riddles » What is the stellar day?23 h 56 min 05 s. Sidereal time is a time-keeping system astronomers use to keep track of the direction to point their telescopes to view a given star in the night sky. It is a time scale that is based on the Earth's rate of rotation measured relative to the fixed stars rather than the Sun. Created by: Krzysztof Moskalaverage 65% 23 h 56 min 05 s23 h 56 min 05 s571924 h 10 min 07 s24 h 10 min 07 s164025 h 22 min 09 s25 h 22 min 09 s84126 h 05 min 11 s26 h 05 min 11 s530stars riddles » What is the highest time zone?UTC+14. Time zones range from UTC-12 to UTC+14. UTC+14 stretches as far as 30° east of the 180° longitude line and creates a large fold in the International Date Line. In Kiribati (UTC+14), the local time is the same as in Hawaiʻi (UTC−10:00), but the date is one day ahead. It is also 26 hours ahead of Baker Island (UTC−12:00).Created by: globalquiz.orgvery hard 33% UTC0UTC01644UTC+12UTC+124006UTC+14UTC+144022UTC+24UTC+242230Oceania riddles » Which large country uses UTC +5:30 time zone?India is one of the few countries that use single time zone with a 30-minute increment from UTC. The country's east–west distance covers 28 degrees of longitude, resulting in two hours difference in astronomical time. Since authorities decided to have one time zone for the whole country, they had to adjust it precisely.Created by: globalquiz.orghard 47% ChinaChina4416IranIran2626IndiaIndia8668BrazilBrazil2547geography of India riddles » Which of these countries first celebrate New Year?Australia. Sydney Time Zone is +10:00, so they celebrate New Year 4 and a half hours before India (+5:30), 10 hours before London, and 17 hours before Los Angeles (-7:00) .Created by: Cleovery easy 81% United StatesUnited States803United KingdomUnited Kingdom309IndiaIndia471AustraliaAustralia6879holidays riddles » Which day was the last of the 20th century?31 Dec 2000. There was no year number zero. So, the first century started on 1 Jan 1. Similarly, 21th century started 1 Jan 2001.Created by: Jason Beagleyaverage 65% 31 Dec 199931 Dec 1999570331 Dec 200031 Dec 20001439331 Dec 200131 Dec 2001121331 Dec 189931 Dec 1899636calendar riddles » What was the exposure time of this photo?About 1 hour. The length of stars trails is pretty much the same as the distance travelled by an hour hand of clock during 30 minutes. But the Earth rotates twice as slow compared to the hour hand of a clock (one rotation per day, while clock's hour hand makes two).Created by: globalquiz.orgvery hard 35% about 10 secondsabout 10 seconds1372about 10 minutesabout 10 minutes1006about 1 hourabout 1 hour2890about 8 hoursabout 8 hours2851photography riddles » World's fastest high-speed cameras were built to take photos of specific objects. What kind of objects?Nuclear bomb explosions. The rapatronic cameras are capable of recording a still image with an exposure time as brief as 10 nanoseconds (that would give 100 million frames per second if the camera was capable to do multiple pictures). The camera uses two polarizing filters mounted with their polarization angles at 90° to each other and a Faraday cell which briefly changes the polarization plane of light passing through it, acting as a shutter.Created by: Cleohard 47% bullet shotsbullet shots2005rocket launchesrocket launches979nuclear bomb explosionsnuclear bomb explosions5106sound wavessound waves2683technology riddles » Play astronomy quiz and see all the questions.