[harshpotatoes]

I agree, but with more emphasis on the affects of one's local climate. I also think a schedule timed with the local sunrise has very much helped me be productive in my current location (florida). Unfortunately in my hometown of seattle, I find my mood too affected by the seasons. In the winter the sun rises at about 900am, and is set by about 5pm. Combined with constant overcast, it never really feels like the sun rises, and it makes it very hard for me to feel productive/happy.

[GrooveStomp]

I have the same issue with living in Vancouver. It might be worse having come from Calgary, Alberta. Generally, in the prairies, the winters are bright and sunny. It's even nice further north around Edmonton where they get more significant snow, because the snow reflects a lot of the sunlight. By contrast, the Pacific Northwest is full of rain and overcast skies. Seasonal Affective Disorder is a term everyone here is familiar with. Most people seem to think snow is the big issue to face in the winter. For me, snow is no problem. Overcast and rainy skies 90%+ of the time is a big issue to consider, however.

[Bystander]

same thing here - I live a bit North of Atlanta, and work at home most of the time. When I do go into the office, I have a lot of flexibility to determine my hours. I find that I get up much earlier in the Summer, and much later in the Winter.

I deal with datacenters around the world, so my work schedule is not a rigid 9 to 5 (or 8 to 6), so doing this doesn't seem to cause any problems at work. Especially when I have early AM concalls (EU), and late afternoon calls (AN/NZ).