There are 31536000000 milliseconds.
2650838400000 milliseconds approx. The exact value depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
1577880000000 milliseconds approx. The exact value depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
157,788,000000 milliseconds approx. The exact value depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
365 days/common year * 24 hours/day * 60 minutes/hour * 60 seconds/minute * 1000 milliseconds/second = 31,536,000,000 milliseconds/common year366 days/leap year * 24 hours/day * 60 minutes/hour * 60 seconds/minute * 1000 milliseconds/second = 31,622,400,000 milliseconds/leap year
Not sure about a melenium - whatever that is, but there are approx 31557600000000 milliseconds in a millennium. The exact number depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
not accounting for leap years, the answer is473,353,890,000
There is an average of 31556952000 milliseconds per year.
How many what in a leap year?
About 31.5 billion milliseconds 1 year 365 days 8,760 hours 525,600 minutes 31,536,000 seconds 31,536,000,000 milliseconds *more accurately * 31,558,464,000 milliseconds
1000 milliseconds in a second. 3600 seconds in an hour. 24 hours in a day. 365.25 days in a year. 31,557,600,000 milliseconds in 1 year alone x1,000,000 = 31,557,600,000,000,000 milliseconds in 1 million years.
1 if it is a leap year
When it is not a leap year, there are 31 days in December, as there are when it is a leap year.