Hi Zack .. many thanks for that.
But .. hmmmm ... now I'm puzzled because that's precisely one of the ways I entered the code when I tried the plugin the first time - putting edcal_default_time in the name field and 08:00 in the value field (with a couple of words in the label field to remind me what the option was aout). And it didn't work.
I also deactivated and re-activated the Editorial Calendar plugin, in case that would make a difference.
But still no luck. A a new post still always comes up with the default time of 10:00.
So I'm back to square one. I'm not sure what's blocking the customs options plugin from working to change the editorial calendar time code.
I'm on WordPress 3.5.1 by the way, using the Thesis theme - 1.8.5.
I may need to test plugins to see if one of them is somehow causing the problem - but will have to wait until I have a bit of time to go through that process.
If you have any ideas or suggestions, I'd be very grateful - but if not, don't worry.
Not having to change the time for each new post would be good, but it's a relatively minor nuisance after all. :)
Thanks for a fantastic plugin by the way! There are two of us adding posts to our blog, so it's a wonderful help to manage who's doing what and when!