One of the things I teach in my workshops is that there is no wrong time of day (or night) to shoot. It all depends upon the light and what story you want to tell with your image. Having said that, there are a slew of magazines that will not even look at a landscape image unless it’s taken during the “golden hours”. More power to them.
Me, I’ll shoot whenever the light and the scene have a story to tell. It may be 6:00 AM in the morning, 8:00 PM in the evening or even at high noon. I figure I’ve got about 20 years before this back of mine gives out for good and I’m not about to waist what time I’ve got left waiting for those “golden hours” to occur.
Life is too short!