Date wording

Is there a way I can make the date of say 21/01/2016 appear as the 21st of January 2016 in thank you's and autoresponders?

I am sorry to say that, it is not possible with the ios7 Time widget. However, we can solve it with DateTime Tool.

Here is how to do:

Now, you can copy the name of your field.

Then, paste it to your Thank you Page.

For autoresponder, make the arrangements as you see below:

 

Please note that, at that situation, it will be shown as Sat Jan 09 2016. 

I hope it helps.

If you have any question or issues, please do not hesitate contacting us. We will be glad to assist you.

I haven't tried this yet as I think I got around it a different way but looking at your method, what makes the date show up as Sat Jan 09 2016 rather than 09/01/2016?
06.01.2016, 15:09, "JotForm" :
...

The changes to the fields display settings are what makes the change.  The example is using a regular date/time field, rather than the time widget.