Every Saturday there is a market on the Grote Markt and on the Botermarkt. On Friday there is an organic market on the Botermarkt. The shops in Haarlem are allowed to open their doors every Sunday between 12.00 and 17.00.
For planned events in 2018 in Haarlem, you can look best on the UIT-agenda of Haarlem, which can be found on www.haarlemmarketing.nl/uitagenda. Certain dates can of course change. Therefore, check the relevant website prior to an event and / or consult www.haarlem.nl for any changes.