# Difference of points in time

Let's find the difference between the two points in time:

`let date1 = new Date(); let date2 = new Date(2015, 4, 25, 12, 59, 59); console.log(date1 - date2); // difference in milliseconds`

Determine the number of days between January `1`st and September `10`th of the current year.

Determine the number of days between `20`th of the current month and `10`th of the next month.

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