How to find out the date of Digital Globe tiles in JOSM?

Hi, please, anyone know how to find out the capture date of Digital Globe (Pr. or St.) tiles in JOSM (with the right click or somewhere else)? For Bing there’s no problem, it shows explicitly.
I right clicked in both images, show tile info:

So I suppose it’s the last, 6/19/2014.
But no Capture Date for Digital Globe Standard:

How to know it?
Thanks for any info.

Ok, found it
JOSM can show DG dates as an additional layer “Imagery Vintage” at “image preferences”