One billion seconds ago is roughly the equivalent of 31.7 years ago, using the US definition of one billion. One billion is one thousand millions.
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1 billion minutes ago was the year 110 . 1 billion minutes later will be the year 3913 .
That was about 114,155 years ago, or 112,142 BC
year 1991.
1 billion Hz = 1 billion cycles / sec = 1 x 10^9 Hz = 1 x 10^9 cycles / sec
To calculate the number of years in one billion minutes, we need to divide one billion by the number of minutes in a year. There are 60 minutes in an hour, 24 hours in a day, and 365.25 days in a year (accounting for leap years). This gives us approximately 1901 years ago, so it would have been around the year 119 CE.