Post 9mPCocL3r0ZkYBLdVQ by anne@beach.city
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 (DIR) Post #9mPCocL3r0ZkYBLdVQ by anne@beach.city
       2019-08-29T19:18:37Z
       
       0 likes, 1 repeats
       
       When I think of the International Earth Rotation Service (more often than you might think) I picture them taking shifts on a big crank.https://www.iers.org/IERS/EN/Home/home_node.html