A fact from RADCAL appeared on Wikipedia's Main Page in the Did you know column on 13 November 2021 (check views). The text of the entry was as follows:
Did you know... that the RADCAL satellite, designed to have a three-year lifespan, operated for almost twenty?
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The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
... that the RADCAL satellite, designed for a three-year lifespan, operated for almost twenty? Source: "RADCAL was designed to last for three years, but remained operational until May 2013." )
ALT1:... that RADCAL was the first satellite whose attitude was determined using GPS data? Source: "It was the first satellite to use a GPS to determine its attitude." [1]
Comment: QPQ exempt, this is DYK nomination #3 for me. I recognize that the main hook's source is basically an Air Force press release, but this is a simple statement of fact and I believe the source is reliable for it.
Overall: Looks good to me! Article is new and long enough (RPS comes in at 1632 B), and the hook is very interesting and sourced. Earwig looks good, and no QPQ is required. Passing with preference for ALT0. PCN02WPS (talk | contribs) 18:37, 21 October 2021 (UTC)[reply]