User contributions for 220.156.65.71
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9 July 2012
- 17:1117:11, 9 July 2012 diff hist +29,362 N Ephemeris time →Redefinition of the second
3 June 2012
- 09:0109:01, 3 June 2012 diff hist +6,167 N GRS 80 →Defining features of GRS 80