What aircraft has the highest time on its airframe?

the vagna 137

VAGNA 137

At noon. The exact time of day varies, depending on your time zone, your exact geographical location, and even the time of year.

Summer Solstice in the northern Hemisphere.

The sun will APPEAR to be 'highest in the sky' at mid-day right on 12 o'clock.I hope this helps you. :)