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  • Tuesday, March 31, 2026
  • Romanian Borrel + Symposium Theme Reveal
    Public
    The ISS (KB 127)
    17:00 - 20:00

    It's that time of the year again, the Sirius A Symposium is right around the corner! This, of course, requires …

    No Signup Required Members Only Free
  • Wednesday, April 1, 2026
  • Deep Sky Stargazing Night
    Public
    Kapteyn balcony
    14:00 - 16:00

    Join us for an unforgettable night of deep sky observations under the darkest skies imaginable. On April 1st at 14:00, …

    No Signup Required External Free
  • Cucumber Event
    Public
    Kapteyn 161
    17:00 - 19:00

    Cucumber Event

    No Signup Required Members Only Free
  • Thursday, April 2, 2026
  • KLC practice sessions block 2a
    Public
    Depends on practice session (see poster or description)
    09:00 - 18:00

    The exam season is once again approaching...But fear not! KLC (Kapteyn Learning Community) has prepared some practice sessions for you, …

    No Signup Required Members Only Free
  • Study Club
    Public
    KB 161
    11:00 - 15:00

    📚Welcome to the 2025/26 edition of the Study Club!📚 The Study Club, hosted by Sirius A, is open to all …

    No Signup Required Members Only Free
  • Saturday, April 11, 2026
  • Voyager Trip Canada
    Public
    Toronto, Niagara Falls, Sudbury, Montreal, Ottawa,
    06:00 - 16:00

    32 students will be expanding their knowledge of overseas astronomical research firsthand during our largest Voyager trip yet, on a …

    No Signup Required Members Only Free
  • Thursday, April 30, 2026
  • EPHEMERIS Sign up Form
    Public
    Outer Space
    12:00 - 23:59

    Your favourite astronomical magazine is aaaalmost here! Are you interested in buying one? Please fill in this form to order …

    Signup Open Members Only Free
  • Friday, May 1, 2026
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    Schiermonnikoog Stargazing & Surf Weekend
    Public
    Schiermonnikoog, campsite TBA
    15:00 - 10:00

    Join us for a weekend trip to Schiermonnikoog, combining daytime adventure and nighttime astronomy! Together with the Armstrong committee, we’ll …

    Signup Open External Free
  • Friday, May 8, 2026
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    Symposium 2026
    Public
    DOT Planetarium
    10:00 - 18:00

    No Signup Required Members Only Free
  • Wednesday, May 20, 2026
  • Outdoor Event
    Public
    15:30 - 18:00

    🏆 Get ready to move, play, and compete! ⚾🌞 Spring is here, and it’s time to take the fun outside! …

    No Signup Required Members Only Free
  • Tuesday, June 2, 2026
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    Casino Night
    Public
    KB 161
    17:00 - 21:00

    -

    No Signup Required Members Only Free
  • Saturday, June 6, 2026
  • Get Ready For Summer
    Public
    TBD
    13:00 - 16:00

    🌞 Get Ready for Summer 2026 The sun is coming out, and it’s time to kick off the summer season …

    No Signup Required Members Only Free
  • Friday, June 26, 2026
  • Members' Weekend
    Public
    Het Noordhuis, 25° Noord Recreatie, Zuideind 25, 9525 TJ Drouwenerveen
    13:00 - 18:00

    ✨ Update: The spots are full for now, but if you want a chance to join the weekend you can …

    Signup Open Members Only 46/45 €48.00