There are no strict rules for this but certain customs and traditions have developed. Different fragrances are considered good for office and professional use, others for informal use, and others for "romantic" use. Some websites offering perfumes for sale will list what are considered appropriate uses for particular fragrances. For example, GIT is usually considered a "daytime scent" and formal enough for business use. Bleu de Chanel is often described as "versatile," that is, it can be worn in many situations and at different times of the day and in different seasons. Citrus scents are widely thought of as "warm weather" or summer scents, usually more appropriate for daytime use. Very strong, heavy scents (e.g., Bois de Portugal) are generally considered appropriate for cooler weather only. Evening scents tend to be richer, more complex, and "darker." Spicy scents and orientals are often considered appropriate for evening use. Office scents are typically quiet, discrete, and pleasantly inoffensive.
In general, this is like what kind of wine you drink with what food. You can follow some general rules or do what you want. Most people are not sophisticated enough about fragrance to criticize you for using an inappropriate scent (as they might do if you used the wrong fork). But people often find strong or very unusual scents unpleasant or offensive. Some people are also allergic to fragrances. A good idea is to have a friend you can check out scents with to see if they seem too strong or inappropriate for a particular use.