1793 - During the revolution the French attempt to implement a system of decimal time, with 10 hours/day:100 minutes/hour:100 seconds/minute. It doesn't take.

French decimal clock from the time of the French Revolution. The inner circle shows the ten hours of the decimal day in Arabic numerals, while the outer circle shows the two periods of the standard day in Roman numerals.

Old UK coins - one penny, half penny (or ha' - pronounced "hey" - penny) and three pence (or "thruppenny bit").

Old UK coins one penny, half penny (or ha' pronounced "hey" penny) & three pence (or "thruppenny bit") also sixpence tanner shilling bob 5 shillings crown and half crown

The Short, Strange History of Decimal Time

The Short, Strange History of Decimal Time

http://ift.tt/2rfP5os that using the wrong units led to the death of 28 American soldiers. An American missile failed to intercept an Iraqi missile in the Gulf War as it's program sometimes used binary and other times decimal to indicate time.

TIL that using the wrong units led to the death of 28 American soldiers. An American missile failed to intercept an Iraqi missile in the Gulf War as it's program sometimes used binary and other times decimal to indicate time.

The Short, Strange History of Decimal Time

The Short, Strange History of Decimal Time

Pre - decimal British coins: The old Penny, and the Sixpence (aka - the 'Tanner').  This was the old 'Imperial' coinage that we used before decimalisation in 1971. As well as these we had other coins coins with great names, like the Farthing (a quarter penny); Ha’penny (half penny); Thrip’ny (three penny); Bob (shilling: twelve pennies); Florin (two shillings)

Pre - decimal British coins: The As well as these we had other coins coins with great names, like the Farthing (a quarter penny); Florin (two shillings)

Conversion rates from pounds, shillings and pence to decimal currency

Conversion rates from pounds, shillings and pence to decimal currency. I was three when it changed.

Hardcore traditionalists - please stop reading now to avoid giving yourself a nervous breakdown :-)  Decimal time systems have been tried many times in the past, and eventually always have failed due to a number of different reasons. I think the main reason however (excluding the social inertia, of course!) is simply because the main culprit always slips away from attention. And that is the good old second. You can't make a decent decimal time system built around 'imperial&a...

Clock for the 'proper' decimal time system

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