The formula to convert Earth days to Mars days is:
\[ \text{M} = \text{E} \times \left(\frac{24}{24.6229}\right) \]
Where:
Let's say the number of Earth days (E) is 10. Using the formula:
\[ \text{M} = 10 \times \left(\frac{24}{24.6229}\right) \approx 9.74 \, \text{Mars days} \]
So, 10 Earth days is approximately 9.74 Mars days.