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Yesterday morning, the clock was six minutes ahead of schedule.
Dunedin City Council property services group manager Dave Bainbridge-Zafar said it was aware the clock had once again been running a few minutes fast.
"Due to its age, we sometimes have minor issues when the clock starts fluttering, which means it runs slightly ahead of time until it is repaired.
"DCC staff are working with a technician to rectify the latest fault and will continue to reset it to the correct time in the meantime."
There were only two people in the South Island that were able to service the clock due to its age, "so we just need to be a little bit patient with it."