Can a Condo owner fly a flag 365 days a years 24 hours a day?

Most condos have rules which they expect their residents to follow, and these rules are different for every condo. There is usually a group of residents who help set and enforce these rules, and you can ask them if this would be acceptable. If they say no, it's probably best not to make a big deal out of it, and remember that you can always join and attempt to have the rule changed. You may also consider alternatives, such as hanging the flag off a balcony rather than flying it on a pole.

In addition, each country may have unofficial rules for flying their flag. For example, in the US it is considered disrespectful to fly the flag at night if there is not a light pointed at it. This may also cause problems with the condo.