White faint lights x6 in a grid style pattern, hovering for 20 min.

Sitting outside just after sunset during a small cook out; family member noticed stationary lights in the sky in formation.  It almost looked like older style radio towers, but not as bright nor flashing.  In this area there are not towers or buildings this high.  Because we were further away from Tokyo, the sky was not washed out by the city light, so you could see the sky well and probably why not many noticed.  We took several photos with an iPhone – they appeared to stay hovered for more than 20 minutes – maybe slightly moving to our right of view.  The formation was like that of the 6 dots on Dominos.  Then they were gone in unison.