Dawn and dusk don't change time that radically in a week do they? Its also a fair rule of thumb as you go further north towards the equator, there is less variation between of dawn and dusk times between the seasons.
i mean for each sections say Margaret river. have the times the sun is supposed to rise and set. so that if i am going to have a long day at work and can know better if it's worth while heading out for a late sesh..
i think it would be handy.
cause i don't always look at my watch and for when the sun goes down. and while the seasons are changing the sun rise and set times change a bit.. maybe just up date the time week to week..
