Not to be a dick....but....
I guess it looks like evening hours. If I had seen one of my guys wearning NVG's in the daytime I'd have given 'em some shit.
That is to remind me of OSUT:
1SG: Privat Connor press the N key
Me: presses the N key
1SG: What do you see Private?
Me: Umm, I don't see shit 1SG
1SG: So explain to me, why the fuck are you wearing NVG's during daytime...
lesson learned