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  5. "I am going to bed at eleven …

"I am going to bed at eleven o'clock."

Translation:Dw i'n mynd i'r gwely am un ar ddeg o'r gloch.

June 21, 2016



I thought 11 was un deg. This is un ar deg. Is it because its time related?


In the more modern, decimal counting system:

  • un deg un - eleven

In the traditional, vigesimal (base-20), system now still used mainly for time:

  • un ar ddeg - eleven (note the mutation deg -> ddeg following ar)
  • un ar ddeg o'r gloch - eleven o'clock
  • deuddeg o'r gloch - twelve o'clock

Also note:

  • hanner dydd, hanner nos - midday, midnight
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