Help Printing Directory Metric or Imperial

Full Scale Printable Horizontal Sundial Templates + Calculate and Set out Large Sundials for Gardens etc - Metric

Select Hemisphere and enter your Latitude, (What's my Latitude?) select Full Scale and hit Calculate to draw a full scale Sundial Template.

Hemisphere
Latitude =
Diameter
Gnomon Thickness Expand template to allow for Gnomon Thickness
Enter Latitude Degrees, Minutes and Seconds and hit Convert Decimal to convert to decimal degrees, and auto enter into Latitude box of Sundial Calculator.


Degrees
Minutes
Seconds


16.36°

Sundial orientation The Gnomon on your sundial needs to point to True North in the Northern Hemisphere, or True South in the Southern Hemisphere.
Hit Find Latitude + Longitude then click your location on the map or drag pointer to orient your sundial.
Align the Magnetic North or South line on the template with your compass North or South to 'Set' the sundial time.

World Map - Click to find coordinates



Latitude
Diameter




For full scale templates, check Full Scale. Hit Print Diagrams to create a full scale .PDF to print. You can 'Poster Print' a large template image over multiple smaller (A4 or Letter) sized pages and reassemble to form a single large template (hit 'Print Diagrams' for instructions) or take to a Print Shop (up to size A0).

Allow for Gnomon Thickness Cut around the template, then cut vertically along the 12 o'clock line and separate to allow for your gnomon thickness, or enter Gnomon Thickness to expand template.

Very large garden sundials You can calculate and mark out dimensions for very large Sundials. For example, a garden sundial, with stones for hour marks, and wood or any large triangular object for the Gnomon. Uncheck Full Scale and use the running list of measurements below to mark out Hour and 15 minute increments around the circumference of the dial.

Cut and fix the Gnomon (the triangular piece) to the sundial face, with base along 12 o'clock line, and latitude angle end at centre.
Place level in sunny area, with Gnomon pointing True North in Northern hemisphere, or True South in Southern hemisphere (as marked on gnomon template). Use a clock or watch to adjust rotation to line up shadow with correct time.

Print a sundial Print a paper popup sundial, cut and fold to test first. You can re-shape the Gnomon, just don't alter the latitude angle, and keep the hypotenuse (sloping edge) straight.

Running measurements around circumference, at 15 minute increments, from 12 o'clock.


Chord Length measurements - Straight line lengths between 12 o'clock and each 15 minute increment.


Hour angles from 12 o'clock. (Vertical)


To mark out a large garden Sundial:
Paper popup sundial Make a paper popup sundial first, to test alignment and see how the full scale sundial will look and fit.
Hit 'Find Latitude + Longitude' to display world map. Click map at your sundial location then hit 'Draw Sundial' to calculate and draw the template with correct Magnetic and True North or South lines. Using a compass, lay a rope (or hose) along the True North or True South line (Gnomon line), with the start of the line being the centre of the base of the sundial. Insert a peg/pin at the base of this line, tie a rope or string to the peg, and tie a marker (peg) at the length you want to be the radius of the Sundial. Pull the rope taught and use the marker to mark out the circumference semicircle (outer curved edge) of the sundial, 90° each side of the centre line.

Lay a rope or hose around the semicircle, or just mark the ground. Use the running list of measurements from the calculator to mark out and number the Hour points around the sundial face, matching the numbers from the template.
Construct the Gnomon to the calculated dimensions and stand vertically along the centre line.

DON'T BREATH THE DUST If you're cutting concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks

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