There is normally 365 days in a year. When we have a leap year there is the additional day added to the month of Febuary, it normally has 28, in this year it will have 29 due to the earths rotation around the sun; causing this to be needed.
Select a color space and enter your values for accurately convert your selection to Rgb, Cmy, Cmyk, Hsl, Xyz, Lab, Lch and Yxy. Note: ColorMine uses the sRgb color space. More information on sRgb vs AdobeRgb. We've recently added support for device specific ICC Profiles for conversions to Cmyk based on your feedback.
To further summarize what has been discussed, when it comes to deciding to use RGB vs CMYK, first figure out what the output will be. If the output will be on a computer monitor then RGB is the way to go. If the piece will be printed, CMYK is usually the standard and the best option.