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.
900,000 milliseconds.
35,000,000 milliseconds
3,155,760,000,000,000 milliseconds.
21,600,000 milliseconds
There are thousand milliseconds in a second.
in one melenium there is 1000 years.
There are 31536000000 milliseconds.
900,000 milliseconds.
35,000,000 milliseconds
3,155,760,000,000,000 milliseconds.
21,600,000 milliseconds
1000 milliseconds
1,000 milliseconds in one second.
60 seconds is equal to 60,000 milliseconds.
There are 60,000 milliseconds in a minute.
There are thousand milliseconds in a second.
1 day = 86,400,000 milliseconds.