1. It refers to mean solar time at the meridian of Greenwich, England. 2. The definition of the second in mean solar time , however, is unchanged. 3. In traditional astronomical usage, civil time was mean solar time reckoned from midnight. 4. Most later equation clocks, made in the 18th Century, directly display solar time . 5. The times above are based on local solar time , rather than standard time. 6. This resulted in leap second adjustments to keep UTC synchronised with solar time . 7. This discrepancy aggregates and causes a difference between clock time and solar time . 8. This aggregates to the angular equivalent of mean solar time + 12 hours. 9. If the gear ratios are correct, the clock shows solar time . 10. The "'equation of time "'describes the discrepancy between two kinds of solar time .
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