Yeah, you should be able to put a listener on a first date question to control the behavour of a second date question but you'll need to consider how to handle things like what to do if a respondent returns to Q1 and changes the date to something later than Q2. The script would also be dependent on the date format.

Yes, I thought it might be a bit more complicated than what I actually gain. What I have now is the most important, and I have to deal with the fact that a date picker in a previous question group, is also affected by this script for some reason. And it shouldn't

It should not affect any other date pickers if you use the question ID in the selector.

tpartner wrote: Ahh, and now comes the green question: In which question..? Together with the script I put in earlier (and where?)? or in the previous date picker question?

Or do I add it to the calendar selector code itself?

Placing my script inthe source of the date question should only affect that question (providing the ID is correct).

But I see now that the piece of code was already there...

Okay, I finally got around to adding it to the workarounds section - docs.limesurvey.org/tiki-index.php?page_...m_Date_in_Datepicker