In 1793, the French smashed the old clock in favor of French Revolutionary Time: a 10-hour day, with 100 minutes per hour, and 100 seconds per minute.

Concerns that traders have enough time to adjust to decimals motivated the NYSE and AMEX s gradual phase-in of the new systems, said James Panchery, a vice president with the Securities Industry ...

How Britain converted to decimal currency 40 years ago, and said goodbye to the shilling, the half crown and the sixpence.