On a clear morning I will try to make sure I am in position a hour before legal. If low ceiling/cloudy/snowing or raining I can doddle a bit as seeing light and legal light become verying different on these days 1/2 is plenty as it will more than likely be 1 hour till I could see enough to make a desicion to shoot.
Here legal shooting time in the morning is 45 minutes before sunrise. I like to be set up at least 30 minutes before this time. Evening hunting is 15 minutes after shooting time. It is different from moring to evening because I live in the east portion of the province.
Hiawatha, you must be refering to the table in the hunting guide! As the law is 1/2 hour before and 1/2 hour after no matter where you live or hunt. I hate that damn table / + or - the median BS...lol. I use my GPS to get exact times of the area I am hunting, being I hunt both east and west this works like a charm. Not to mention it maybe the only time I turn on my GPS that day...gotta get my money's worth..