Star Map Night Sky

The real night sky of your date and place

One solid body, no colors. Works with every slicer.

Presets

Text

Title

Second line

Place

Date text

Show the time

Font

Date and time

Year

Month

Day

Hour

Minute

Time zone (hours from UTC)

The offset that applied on that date, summer time included. Amsterdam is +1 in winter and +2 in summer.

Place

Latitude

North is positive. In most maps apps, long-press a place to copy its coordinates: the first number is the latitude.

Longitude

East is positive, west negative.

Sky

Faintest stars

Higher shows more and fainter stars. 4.5 is about what you see from a town; 5.5 is a dark countryside sky.

Constellation lines

Horizon ring with N, E, S, W

Moon

Shape

Make it a

Plaque mount

Sky diameter

Colors

Base color

Stars color

Text color

Examples

Two example settings, each from two angles. These are 3D renders of the model this page generates, not photos of prints.

Star Map Night Sky, default settings (3D render) — **Default settings**Time zone (hours from UTC) 2 · Latitude 52.091° · Longitude 5.121° · Place: “Utrecht”

Star Map Night Sky, default settings, closer view from above (3D render) — **Default settings**Time zone (hours from UTC) 2 · Latitude 52.091° · Longitude 5.121° · Place: “Utrecht”

Star Map Night Sky, amsterdam (3D render) — **Amsterdam**Time zone (hours from UTC) 1 · Latitude 52.368° · Longitude 4.904°

Star Map Night Sky, amsterdam, closer view from above (3D render) — **Amsterdam**Time zone (hours from UTC) 1 · Latitude 52.368° · Longitude 4.904°

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About this generator

Type a date, a time and a place to generate an approximate chart of the sky.

How to use

Pick a city preset or enter the latitude and longitude of your place.
Set the date, time and that day's time zone.
Add names and a title, then choose a plaque, ornament or night-light.
For the night-light, put it over an LED tealight in a dark room.

Printing tips

Change filament at the height of the stars for a two-color plaque on a single-nozzle printer.
For the night-light use dark, opaque filament: the stars then show as sharp dots on the ceiling.
Use LED tealights only, never a real candle.
The wall keyhole has a 9 mm entry and internal head passage, a 4.5 mm shaft slot, and 1 mm retaining lip and front roof. Nominal screw envelope: head up to 8 mm diameter by 1.6 mm thick, shaft up to 4 mm. Check bridging, hardware fit and load capacity before use; none is physically verified.

Helpful guides

Frequently asked questions

Is it the real sky?

It is an approximate chart using Yale Bright Star Catalogue positions and your date, time and place. Positions are fixed at year 2000; precession, proper motion and atmospheric refraction are not applied. Star dots and the moon are enlarged for printing.

Why is east on the left?

A sky map is drawn as you see it lying on your back looking up, with north at the top. Then east is on the left.

Which time zone do I enter?

The offset from UTC on that date. In Amsterdam, London or Paris add one hour in summer. A wrong offset moves the whole sky by 15 degrees per hour.

Can I use it for a Christmas ornament?

Yes: choose Ornament, for example with the sky of a first Christmas.

Where does the star data come from?

Star positions and brightness come from the Yale Bright Star Catalogue (public domain). The constellation lines come from d3-celestial, copyright (c) 2015 Olaf Frohn, used under the BSD 3-Clause License.