Fun metric time fact is that France conceded to Greenwich becoming the international prime meridian on the condition that the conference on the meridian also expressed a hope for a decimalised system of time (and angles). https://en.wikipedia.org/wiki/International_Meridian_Confere...
In the end they ended up not adopting the Greenwich meridian for quite some time afterwards.
In the end they ended up not adopting the Greenwich meridian for quite some time afterwards.