For me, the answer is as plain and unimaginative, as direct:
Anytime is fragrance time and fragrance time is anytime.
A few years ago, I still tended to select, organize, separate, group, classify, categorize my scents according to time of the year, time of the day, season, weather conditions etc., but since I live in a pretty much moderate climate zone and I can wear anything I like on most professional (even more so than on personal occasions, since I work mainly from my home office), my fragrance choices, fragrance wardrobe etc. have become quite whimsical, reckless, eclectic, uncommon, almost unrelated to any time of the year, season, weather etc. Thus, pretty much anytime of the year is my favorite for wearing any type of fragrance, as long as I can wear whatever I like.