mars-rotation

Below you can see a scan from Collins Dictionary of Astronomy, by Daintith and Gould, published by HarperCollins Publishers, 2006, page 266

You will see that Mars’ rotation period is given as 24 hours, 37 minutes and 22.67 seconds.

22.67 ÷ 60 = 0.37783333 minutes

37.37783333 ÷ 60 = 0.622963888 hours.

24.622963888 ÷ 24 = 1.025957 Earth days.

Mars’ (sidereal) rotation period = 1.025957 Earth days.