According to About.com: Geography, the Summer Solstice is 2:06 p.m. Eastern Daylight Time (18:06 UTC).
I suspect the Southern Hemispher's Winter Solstice is around the same time.
I suspect the Southern Hemispher's Winter Solstice is around the same time.


Comments
I'll be in the sun at that precise time, then. So I can say I was outside for the solstice.