Please excuse the bad image on some of these, they are taken from screen shots.
First open up a new document in Open Office.
Click on the Fontworks icon.
Choose a simple font, I have used the 2nd one in from top left, you can change the shape afterwards.
This is how your screen will look:
When your fontwork is selected you will get up a small menu box on your screen as shown below. You need to click the drop down arrow next to the 2nd icon in to bring up a drop down box of shapes. I can't screen capture this to show you but you need to pick the narrow circular shape.
Your page should now look like this:
Double click the image and you should get a line of text reading Fontwork in the middle with a flashing cursor to the front of it.
Select the text in the middle so it is highlighted and type your new text. Your screen will look like this when you have finished typing but before you click away from the text.
When you click away from the circle of text it will look like this:
Change the shape and size of circle as desired by dragging the handles.
If you want to increase the gap between Dec and Jan you can. Just hover you mouse over the yellow dot that is there and your pointer will turn into a hand. Click and drag the circle upwards slightly and that will create a bigger gap between the first and last words.
If you want to change the font you can, just double click and highlight the middle text and change to the font you want. Open Office is a little tempremental with this, the font should change straight away, if it doesn't it may not work so keep trying with it. It should look like this before you click away from the circle:
When you click away the straight text in the centre will disappear.
Instructions for MS WORD.
I'm unable to do screen shots for the MS Word instructions but it is much easier than Open Office so I'll do a step by step:
1/. Open a new document in Word
2/. Go to INSERT > PICTURE > WORDART
3/. A Word Art Gallery will appear that is very similar to the one in Open Office, click on the 2nd one in from the left at the top and click ok.
4/. A new box will appear called Edit WordArt Text. First type your new text where it says Your Text Here. Highlight the text you have just typed and then change your font and font size to whatever you want. (You can change this later if you want).
5/. Click ok and the new text will appear. If you selected the 2nd one in from the left at the top on the first screen your text will still appear on a slant as it was before.
6/. There should be a little floating WordArt menu box on the screen, hover over them until you get to the one that looks like an Abc and it should say WordArt Shape. Click on this button.
7/. A new box will appear with a variety of shapes. Pick the thinner circular one (the one on my screen is on the second row, 3rd in from the left). The text will now look like an oval shape on the screen.
8/. Use the handles on the text to change the shape. Drag in the long part of the oval and pull up the narrow side to form a circular shape. You can also change the size as well.
9/. To change the font or size just double click within the graphic and your Edit WordArt box will appear.