There are 365.2564 such days in a sidereal year. The tropical year has a slightly different value, and has reference to the vernal equinox, which itself precesses a little. There are 365.242199 days in a tropical year. There is yet a third kind of year, the anomalistic year, the time span from one perihelion to the next. There are 365.2596 of these days in a year.
Astronomers use the sidereal year for comparison purposes.
To some it will appear odd that we ascribe 1,436 minutes instead of 1,440 to the year. But that is the period of time the Earth rotates from the view of the fixed stars. The sidereal spin rate of the Earth is 1,436 minutes. The sidereal spin rate for Mars is 1,477 minutes, which is just 41 minutes slower. In decimals, the Earth's spin rate is in 23.92 hours and the Martian one is in 24.62 hours.