Period of the stay based on the extended visa cannot exceed the maximum period defined for the described kind of visa:
Governor can extend the visa in extraordinary circumstances, the national as well as the Schengen visa. You need to remember that the visa should be extended just once (the exception exists only in the situation when the foreigner is staying in the hospital.
The extension of the visa is possible only if during the stay in Poland circumstances occur such that you could not possibly forecast them in the time of submitting for the visa to the consul (count in-hospital stay, humanitarian, personal or professional reason that makes your leave from Poland impossible). Submit your request to extend the visa to the Governor right to your place of the stay, basing on the visa that you want to extend at the latest on the last day of your legal stay in Poland.
You should apply for the extension of a national visa not later than on the expiration date of the visa that you already own.
You should apply for the Schengen visa extension at latest on the expiration date of the visa that you already own.
