How do astronauts on the space station draw them?
I don’t remember how I was taught to print O’s, but when learning cursive it was definitely counter-clockwise. The system doesn’t really work clockwise, at least with the capital O’s. (I could see it as possible with the lowercase o’s, but I was definitely taught to do them counter-clockwise.)
I don’t think this question actually makes sense. Take the rotation of the solar system: Are you looking at it from “above,” in which case it appears to rotate counter-clockwise, or “below,” so it appears to rotate clockwise? And why should you prefer one orientation to the other? It’s arbitrary. Ditto the spin of the Earth. My understanding is that the spin of the planets (mostly) matches the overall spin of the solar system, reflecting the spin of the original dust cloud during the solar system’s formation. If you look at other solar systems, I don’t think their planes of rotation line up with ours, so how would you compare them?
My chemistry is rusty, but I believe the designations left- and right-handed for chiral molecules are also essentially arbitrary.
Righty, always counterclockwise.
The OP is contradictory. The title is about drawing a circle. The text talks about the letter O.
I write the letter O clockwise, a circle counterclockwise. Drawing the circle clockwise forces me to think about what I’m doing more, so I’m more careful. I have no need to get the letter O symmetrical so clockwise is faster (no doubt from years of practice).
What’s more, if I’m writing a series of numbers and letters, I’ll draw a slash through my zeros to make sure they’re distunguishable from the letter O. From upper right to lower left. Really. But usually only if there’s a chance it could be mistaken for an O, not with phone numbers and such.
Right handed, N.H.
I write the letter “o” counterclockwise. I usually draw a circle counterclockwise, but if it’s a big circle, I will usually draw it clockwise.
Ditto, except Capricorn.
White, Male, 51.
AB-
More useless data.
Right-handed, northern hemisphere.
And this.
And I stir small things (cup of coffee) counterclockwise, but larger things (gallon of paint) clockwise.
This. We’re definitely taught to write the letter O counter-clockwise starting at the top, specifically when we learned cursive writing. (Aside: I see in recent news that there’s debate whether children should be taught cursive writing in school any more. This is easy to understand. There’s way too much cursing among school children these days.)
The cursive O (both capital and small) ends with a tail that extends from the top center towards the right. That’s at least one reason why, as Topoligist says, “The system doesn’t really work clockwise. . .” – for both capital and small O.
ETA: Picture of cursive O’s. O is for Otter. Yes, including the arrow showing the direction for capital O, but ambiguous for the small o.
(Missed edit window on the above.)
ETA some more: Notice that neither the capital nor the small O connects to the t in the word “otter”. I always connected the tail of the small o to the next letter, by reducing the left-side tail of the following letter. Otherwise, what are the tails on the letters good for anyway?
That’s really a poorly prepared workbook, for both the examples at the top and the missing arrows to completely describe how to write the lowercase o. Yes, the lowercase letters should be connected. It looks like the example at the top was done with a simple computer font either without ligatures to connect the letters properly, or without software that understands how to use ligatures.
Right handed. Counterclockwise. It’s also far easier for me to draw a profile that faces left because forming the brow, nose, lips and chin flows more naturally. The the drawing tool pointing toward the left side of the right hand just makes the curving movements easier to make that way.
Hmmm. I hadn’t thought about it before, but whereas I draw my circles counterclockwise, I always stir clockwise. I wonder why that is.
EDIT: Thinking about it, it must be a function of the particular muscles involved. My fingers naturally want to go counterclockwise, my wrist and shoulder clockwise.
RH, NH, Clockwise, two days after the Nones of February. Beats 4 clockwise in 5/8.
After giving it some thought, and looking back on some of my scribbles, I see that when it comes to drawing a circle I don’t have a set preference. I would have thought I’d follow the motion of drawing the letter “O”, which would put me in the clockwise category (left handed, northern hemisphere, for what it’s worth) but that doesn’t appear to be the case.
Being left handed, cursive never sat well with me. 
In the 60’s, I was taught to write an ‘o’ counterclockwise. I draw a circle the same way. There’s no way that this would have anything to do with the Earth’s rotation. The coriolis force isn’t strong enough to matter for such small distances and velocities.
My guess is that the counterclockwise motion is simply more natural a motion for the right hand, for most people.
Right handed. Left footed. Western Hemisphere.
I draw circles from the middle outward.
I write the letter “o” (lower or upper case) by pushing the correct button (or virtual button) on the keyboard (or virtual keyboard).
Right-handed, counterclockwise here.
Right handed.
Counter clockwise.
Western Hemisphere.
Size 10.
98.7 usually.
70.
Softer, then firmer.