I'm sitting here wondering where on earth this year went, but I am SO excited that the holidays are almost here! (belleamourdesigns.com)
1920s through the present Quartz clocks Mechanism: Electrically induced vibrations of quartz crystal Error: From 10 seconds per day for a cheap watch to 0.3 second per year Accurate enough to: Measure variations in the rotation rate of the Earth (discovermagazine.com)
The minimum speed near apoapse, about 1.8 degrees per Earth year, is slower than Neptune.) (en.wikipedia.org)