Knaldrang at Jopenkerk: Friday 25 September
Tonight 20:00 to 01:00. Ouderavond at Jopenkerk. Caspar-J, Charly Mashed-UP, Boyos Soundsystem. Eventbrite lists 0 euro.
Written by Sanne de Ridder
Friday 25 September 2026. Knaldrang puts an ouderavond in Jopenkerk, Gedempte Voldersgracht 2. Eventbrite lists 20:00 to 01:00. The sponsored Instagram post says the same, with the line Old enough to know better, young enough to do it anyway.
What is Knaldrang tonight at Jopenkerk?
The organiser is KNALDRANG. Eventbrite bills the night as OUDERAVOND @Jopenkerk powered by KNALDRANG. Three names on the lineup: Boyos Soundsystem, Caspar-J and Charly Mashed-UP. Boyos sits there as headliner. The flyer on the ad prints BOYOYSOUNDSYSTEM. Same slot, different spelling. Keep the Eventbrite list if you want to know who plays.
Five hours. In person. Eventbrite ticks all ages. That is their default tick. The night itself is called ouderavond. An 18-plus door rule is not written down. You pay for drinks at the bar.
The Jopenkerk agenda does not list this night. Their page has masterclasses and a later pub quiz. This is a Knaldrang night in that church. Tickets run through Eventbrite.
Where is Jopenkerk?
Gedempte Voldersgracht 2, central Haarlem. Eventbrite prints 2011 WD. The venue and Wikipedia keep it as the Vestekerk, the 1910 church by J.J. van Noppen. First a liberal Reformed church, later Jacobskerk, then a gallery for years. Demolition plans for the Raaks quarter died at the Council of State in 2005. Jopen bought the building in 2010. First guests on 11 November 2010, the brand's sixteenth birthday. Official opening 8 December that year.
Ground floor daily 10:00 to 01:00, holidays included. Wheelchair access downstairs. No pets, it is a production site. Brewing Monday to Friday. Restaurant on the first floor, no lift. Call 023 533 4114. Haarlem Centraal is a short walk.
How do you get a ticket for 25 September?
Tickets run through Eventbrite. The shop sets the price at 0 euro and marks the night as free. Tickets were still open when we checked, 25 September in the morning. Sales close on that page on 26 September at 18:30 UTC. Free on the screen: reserve there anyway, the counter can hit zero.
A door price besides Eventbrite is not listed. Beer and food you pay inside Jopenkerk. The ground floor shuts at 01:00, the same hour as the last record.
The ad sat under knaldrangang.nl. Eventbrite names only the organiser KNALDRANG, with no Instagram link.
What can you do earlier on Friday in Haarlem?
The set starts at 20:00. In daylight you can read the city as a beer town, in the StepQuests app, no group departure.
- Brewed in Haarlem if you want the kettles placed in daylight first
- Haarlem Pub Crawl on another night
- Mid-October: the autumn bock weekend. Jopenkerk is on that list of 27 cafes, Gedempte Voldersgracht 2
- 3 October: Disco Night at De Stinkende Emmer, the other side of town
Source
Date, hours, lineup, free ticket: Eventbrite, read 25 September 2026. Ouderavond line and DJ names: the same page plus the Instagram ad. Building: jopenkerk.nl and Wikipedia Vestekerk. Cover: Takeaway, 12 May 2015, CC BY-SA 4.0.
