timo Hi Timo, thank you for your prompt response to my enquiry. I should explain the context - after using and comparing several online diary tools, I've chosen Diarium for a retirement project of matching up photos, diary entries and existing Outlook calendar items & web links .. with the possibility I might want then to export the whole lot to Word as the foundation for a written memoir. There will be at least a few hundred entries that I expect I will have to go back and forth between over coming months, probably thousands of times.
I have tried the method(s) you refer to but, as far as I can tell, each available method involves multiple steps. At one point you have a dialogue that looks very much like the Outlook version, but it doesn't let the user just type in the required date.
In Outlook I can just type in the date 1/9/1980 which the Outlook control converts into what you can see in the screenshot as Mon 01/09/1980 and immediately takes me to the required date in the Calendar. Unless, I'm doing the wrong thing, the existing Diarium routines involve quite a lot of clicking and scrolling, which isn't ideal in a date-oriented app.
So, yes a single click to a dialogue box like the screenshot attached -- a longstanding Outlook on Windows CTRL-G function would be a marvellous extension to Diarium, accompanied by the CTRL-T ("back to Today") companion.
When I say 'click', I mean either a dedicated icon, or (my preference) the equivalent keyboard shortcut.

Many thanks, John