During my years in Tucson I could never understand how anyone could be depressed. Summer sunrise by 500 am (no daylight savings) and birds singing, it was great. But we still had a psych ward full of depressed people.
I understand the childlike wish that it could be so simple as to "go outside--get some sun--." To think that life could be that unthreatening. But if it were that simple, antidepressants never would have had to have been invented.
Well, by all means, get some fluorescent lights into the psyhc wards.