>People tend to have a sense of what they make per hour, but very few people have a sense of their daily rate, unless they're consultants. Why? Isn't it equall

>People tend to have a sense of what they make per hour, but very few people have a sense of their daily rate, unless they're consultants. Why? Isn't it equally easy to divide a monthly salary by 30 as by 30 x 8 (ignoring holidays, to keep it simple)?