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The warmest day on record for the entire planet was 22 July 2024 when the highest global average temperature was recorded at 17.16 °C (62.89 °F). [20] The previous record was 17.09 °C (62.76 °F) set the day before on 21 July 2024. [ 20 ]
On Jan. 15, 1972, 53 years ago, a weather observer in Loma, Montana, measured a morning temperature of 49 degrees. That sounds warm for mid-January, but that's only half the story.
The sidereal year differs from the solar year, "the period of time required for the ecliptic longitude of the Sun to increase 360 degrees", [2] due to the precession of the equinoxes. The sidereal year is 20 min 24.5 s longer than the mean tropical year at J2000.0 (365.242 190 402 ephemeris days). [1]
Length of a decimal year. Since there are about 365 days in a year, there are about 365 / 10 = 36.5 days in a tenth of a year. Hence the year 2020.5 represents the day 2 July 2020. [22] More exactly, a "Julian year" is exactly 365.25 days long, so a tenth of the year is 36.525 days (36 days, 12 hours, 36 minutes).
The temperature warmed from minus 54 degrees to 49 degrees above zero in just 24 hours. That 103-degree temperature rise set a record for the largest 24-hour temperature change in U.S. weather ...
It was among the five hottest days in Spokane's recorded history, according to the National Weather Service. The high of 107 took fourth place, behind 1928 and 1961's 108-degree days, and ahead of ...
The division of the circle into 360 degrees and the day into hours, minutes, and seconds can be traced to the Babylonians who had a sexagesimal system of numbers. The 360 degrees may have been related to a year of 360 days. Many other systems of measurement divided the day differently—counting hours, decimal time, etc.
The book takes readers on a day-by-day journey from January 1 to December 31, uncovering at least one interesting and appropriate historical event for each day of the year. This Day in History For ...