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How long ago was one million minutes?
60 million seconds, 16666.666(repeating) hours, 694.444(repeating) days, 99.206349 weeks, or 1.907814 years ago.
How many thousands of years ago is 3 million years?
One million is one thousand thousands. Three million is then three thousand thousands.
How many thousands of years ago is .3 million years?
.3 is the same as three tenths. Three tenths of one million is three hundred thousand years.
How many years ago is 1 billion seconds ago?
There are 60 seconds in a minute and sixty minutes in an hour, so each hour is 3600 seconds. Multiply 24 to get days, and then 365.25 to get years, accounting for leap years. This is 31,557,600 seconds per year. Divide 1,000,000,000 seconds by 31,557,600 seconds per year, and you get 31 years, 251 days, 7 hours, 46 minutes and 40 seconds. (Why didn't I figure out the months? Because the months aren't equal!)
What year was it 150 million years ago?
It would have been 149,997,988 years BC (in 2013). But, assuming that 150 million is, at best, accurate to the nearest million years, for all intents and prposes, the answer should be 150 million years BC.
