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Time zone abbreviations for both Standard Time and Daylight Saving Time are shown exactly as they appear in the database. See strftime and its "%Z" field. Some of zone records use 3 or 4 letter abbreviations that are tied to physical time zones, others use numeric UTC offsets.
11.6 days (or 11 days, 13 hours, 46 minutes and 40 seconds) 10 9: gigasecond: 1 000 000 000: 31.7 years (or 31 years, 252 days, 1 hour, 46 minutes, 40 seconds, assuming that there are 7 leap years in the interval)
Also called "megayear". 1000 millennia (plural of millennium), or 1 million years (in geology, abbreviated as Ma). petasecond: 10 15 s: About 31 709 791 years. galactic year: 2.3 × 10 8 yr: The amount of time it takes the Solar System to orbit the center of the Milky Way Galaxy (approx 230 000 000 years [2]). cosmological decade: logarithmic ...
RFC 3339 Date and Time on the Internet: Timestamps specifies YYYY-MM-DD, i.e. a particular subset of the options allowed by ISO 8601. [10] RFC 5322 Internet Message Format specifies day month year where day is one or two digits, month is a three letter month abbreviation, and year is four digits. [11]
24-hour digital clock in Miaoli HSR station. A public 24-hour clock in Curitiba, Brazil, with the hour hand on the outside and the minute hand on the inside.. A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of ...
Metric (SI) measurements generally use decimals, not fractions (5.25 mm, not 5 1 ⁄ 4 mm). Non-metric (imperial and US customary) measurements may use fractions or decimals ( 5 1 ⁄ 4 inches ; 5.25 inches ); the practice of reliable sources should be followed, and within-article consistency is desirable.
The financial and general news media mostly use m or M, b or B, and t or T as abbreviations for million, billion (10 9) and trillion (10 12), respectively, for large quantities, typically currency [28] and population. [29] The medical and automotive fields in the United States use the abbreviations cc or ccm for cubic centimetres.
This article lists common abbreviations for grammatical terms that are used in linguistic interlinear glossing of oral languages [nb 1] in English. The list provides conventional glosses as established by standard inventories of glossing abbreviations such as the Leipzig Glossing rules, [2] the most widely known standard. Synonymous glosses are ...