Yes. They can never be 100% reliable
67 days is 9 weeks and 4 days
67 hours = 2.8 days.
67
67 years = 24,471 days (rounded)
67 years is approximately 24,471.415 days.
January 20 + 67 days = March 28
There are 24 hours in a day. Therefore, 67 hours is equal to 67/24 = 2.7916 recurring (that is, 2.7916666..) days or 2 days 19 hours.
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Friday, February 18, 2011 is 67 days from Dec 13.
67
It is 67 days of night in Alaska. Its not pitch black like that new movie but there isn't much sunlight.
The average gestation period for cats is 60-67 days, so they can have kittens before 67 days without it being considered premature. It is also possible for cats to have premature deliveries before 60 days.