I make use of a lot of julian and gregorian dates. To help myself, I wrote a little utility that prints out the pairs of dates. A sample printout is attached. the format of the report is such that the day of the week is shown as well.

If you are interested, I can create a patch file that can be made public. To see what it looks like open the attached pdf file.

Form, script and report -- 3 components.

I will post a updated version. The only difference is an addition. The fields have been shifted to the right 3 places, and in column 1 and 2 I put in the week number. By the way, an english version is available as well.