astronomical day वाक्य

उदाहरण वाक्य

1. GMT either by that name or as'mean time at Greenwich'used to be an international time standard, but is no longer so; it was initially renamed in 1928 as Universal Time ( UT ) ( partly as a result of ambiguities arising from the changed practice of starting the astronomical day at midnight instead of at noon, adopted as from 1 January 1925 ).