Personalized Date Poster, Birthday & Anniversary Math Curve Art

One meaningful date, such as a birthday, a wedding or the day someone arrived, drawn as a mathematical curve. The day, month and year set the shape, and the poster shows the equation that drew it.

Choose a spirograph, Lissajous or standing-wave curve, a color scheme, and a name or title to print. You can leave the date itself off the poster.

Each poster is designed on our website, locus-and-line.com, with a live preview you check before it goes to print. Ordering in the Shop app or through an assistant instead? We'll email you for the names and dates before printing.

Printed on enhanced matte paper and shipped unframed within the US.

How a date becomes a curve

The Lissajous curve

The month sets the side-to-side waves, the day the up-and-down waves, and the year where the curve starts.
The spirograph

A small wheel rolls inside a ring with a pen near its edge: the day sets the ring, the month the wheel, the year how far out the pen sits.
The standing wave

A string fixed at both ends: the month sets the loops, the day the moments drawn and a second note, the year how much of that note joins in.
What note does your date play?

On a string tuned to A, every date plays a note. Tap to hear it, then try yours.