Digital invitation for a planetarium birthday party

17:12 on a Saturday. The dome show starts at 17:30, half the kids are already in the lobby and a dad is asking you which door is the right one. A planetarium birthday has two things most parties don't: a fixed show time and a building with several entrances. That's a lot for a group chat to carry. A digital invitation can hold all of it — pick a design from the collection, fill in the fields and send one link today.

Whether you call it a planetarium birthday or a space-themed party, the link is what keeps everyone in the right place at the right minute. Here's how to write it.

Digital invitation for a planetarium birthday: dome time first, cake second

The show time is the spine of the afternoon. Fix it and write it plainly — 17:30, not "late afternoon" — then put the snack, the cake and the photos behind it. Give one meeting point that survives a building with several rooms: "we meet at the ticket desk, by the solar system poster". If the kids go into the dome while the adults wait in the hall, say it in the same sentence: "kids into the dome at 17:15, adults in the hall with coffee".

• Exact dome show time and snack time, both on the cover.
• A real meeting point: ticket desk, solar system poster or side entrance.
• Cover photo: the empty dome or the star chart for the birthday date.
• An RSVP question that helps you plan: how many kids, how many adults, who stays for the cake.

The sky on that date, not a catalogue sky

Take the colour that runs the room — deep blue or near-black — and save one bright accent for the word "birthday", which needs the contrast to be read at a glance on a phone. Use the empty dome or the star chart for the birthday date as the cover photo, and upload up to six of your own pictures; the frame crops them so you don't have to. No other party on your list can copy that cover.

Name the areas after constellations. Orion for the cousins' table, Ursa Minor for the youngest ones. It puts people in the right spot faster than "table 1" and "table 2", and it sounds like the room they're actually standing in.

Three scenes: the threshold, the dome, the cake

Scene one, "Dome threshold": the cover with the time, the place and a photo of the dome before the lights go down. Scene two, "Night sky": the date, the constellation you picked and the line that gets read aloud just before the projection starts. Scene three, "Cake and exit": a dress code that fits the venue — comfortable clothes, no heels for the tiered seating — and the exact pick-up time.

The dome show is the party. The invitation is the person at the door telling everyone where to stand.

Why the link does the work at a planetarium

Show times move and rooms change at short notice. With a digital invitation you edit the page after you've sent it and the link stays the same: no re-sending, nobody reading yesterday's version. Confirmations land inside the invitation in one ordered list, so you know how many are going down into the dome without chasing replies the night before. Guests open the link in any browser, on a phone, with nothing to install. Pick a design, try the cover for free and publish with one button — 29,99 EUR once, no subscription.