User:Jc3s5h/sandbox

This page collects positions of the UK's National Physical Laboratory on the relationship among GMT, UTC, UT1, and related timescales. "The World Time System" seems to be oriented toward a popular audience. It states " In effect, the seconds of Universal Time (UT1, as GMT is now officially known) vary a little in length in order to keep in step with the changes in the Earth's rotation. This makes UT1 an imprecise method of keeping time."(World Time System 2011)

A similar page about leap seconds states "In effect, the length of the seconds of Universal Time (UT1, as GMT is now officially known) varies slightly to keep in step with the changes in the Earth's rotation."(Leap Second 2016)

A paper submitted to the ITU/BIPM Workshop on the Future of the International Time Scale in connection with the debate about abolishing leap seconds contains the following bullet points:

• UK laws refer to Greenwich Mean Time GMT

• UT1 is the modern form of GMT
• UTC provides an adequate representation of ‘GMT’ (Whibberley 2013)

A description of a time and frequency radio station states "The timing of these edges is governed by the seconds and minutes of Coordinated Universal Time (UTC), which is always within a second of Greenwich Mean Time (GMT)." (NPL Time & Frequency Services 2006)

28 February 1969(1969-02-28) (aged 64)

Example of difficulty in automating date conversion

I'll reply to Austronesier's post in the previous thread because it is more germane to this thread. In the archived threads I referenced earlier in this thread, it came up that none of the automation could handle a passage like this:

   The Metre Convention was signed on May 20, 1875; it was based on earlier informal cooperation among several nations.

If it were converted to MDY format in a mechanical way, without complex analysis of the context, it would probably come out like

   The Metre Convention was signed on May 20, 1875,; it was based on earlier informal cooperation among several nations. (boldface for emphasis of error)

It's possible, with careful coding, to represent dates according to the preference of the reader when the computer program is writing the entire passage around the date. But no one has put forward code that can convert date formats properly in the midst of editor-written text. Jc3s5h (talk) 16:11, April 22, 2022 (UTC)

Conversion and infobox example

Input:

{{convert|365.256363004|d|yr|comma=gaps|abbr=on|lk=out|disp=x|<ref name="IERS" /><br /><small>(|[[julian year (astronomy)|_j]])</small>}}

Result:

365.256363004 d
(1.00001742096 a_j)

Works cited

• Aries, Myriam B. C. & Newsham, Guy R. (2008). "Effect of daylight saving time on lighting energy use: a literature review" (PDF). Energy Policy. 36 (6): 1858–1866. doi:10.1016/j.enpol.2007.05.021. Retrieved October 18, 2013.
• Aries, Myriam B. C. & Newsham, Guy R. (2008). "Effect of daylight saving time on lighting energy use: a literature review" (PDF). Energy Policy. pp. 1858–1866. doi:10.1016/j.enpol.2007.05.021. Retrieved October 18, 2013.
• Aries, Myriam B. C. & Newsham, Guy R. (2008), "Effect of daylight saving time on lighting energy use: a literature review" (PDF), Energy Policy, 36 (6): 1858–1866, doi:10.1016/j.enpol.2007.05.021, retrieved October 18, 2013
• "The World Time System". October 26, 2011. Retrieved January 21, 2019.
• "The Leap Second". May–June 2016. Retrieved January 21, 2019.
• Whibberley, Peter (September 19, 2013). The future of UTC – a British perspective (PDF) (Report). International Telecommunications Union.
• NPL Time & Frequency Services: MSF 60 kHz Time and Date Code (PDF) (Report). July 2006.
• Urban, Sean E.; Seidelmann, P. Kenneth, eds. (2013). Explanatory Supplement to the Astronomical Almanac (3 ed.). Mill Valley, CA: Univ Science Books. ISBN 978-1-891389-85-6.
• Urban, Sean E.; Seidelmann, P. Kenneth, eds. (2013). Explanatory Supplement to the Astronomical Almanac (3 ed.). Mill Valley, CA: Univ Science Books. ISBN 978-1-891389-85-6. {{cite book}}: |website= ignored (help)
• Bozo (July 25, 2016). "The Leap Second". Retrieved January 21, 2019.
• Eligon, John; Barry, Ellen; Weise, Karen (March 8, 2020). "Forfeited Games and Virtual Learning: Coronavirus Shuts Down Schools - The New York Times". The New York Times. Retrieved March 8, 2020.
• "TRUMP". Townsville Daily Bulletin. Vol. LV, , no. 205. Queensland, Australia. August 28, 1933. p. 10. Retrieved October 29, 2022 – via National Library of Australia.{{cite news}}: CS1 maint: extra punctuation (link)
• "London Gazette". 29 February 1700. {{cite news}}: Check date values in: |date= (help)
• "Test". Dirt Journal. February 29, 1500.