I too can't start drinking until it's getting dark outside, the kids are in bed, and I'm free to go where the mood takes me. However, if I go out to eat for lunch, I'll occassionally have a beer or a girly drink with my meal...wine too.
Normally, after noon. But, when we're out at Nationals in Ohio and aren't shooting that day...well, any time is fair game. Of course, you have to remember that we're usually at around 6000 feet elevation, and out there we're at almost sea level, so beer is almost like drinking soda pop. The earliest we started drinking out there was 8:00 a.m., but I figured since my father offered me the beer it must be OK!