Bill Heyman

Artifacts

Self-contained pages that make an idea visible.

Small interactive things I build to understand something and share it — each one a single self-contained page, no accounts, no tracking beyond a page count. Several grew out of an afternoon poking at the IANA time-zone database; one is a tribute to a date; one traces four mystery towers through a county’s deed records.

Four steel lattice towers on the horizon of a Wisconsin farm field

Field investigation · Wausau, WI

The Towers on Radar Road

Four Cold-War-era towers stood in a farm field for sixty years. A deed-by-deed investigation into what they really were — and whose field it was.

World map shaded by which countries change their clocks in 2026

Interactive map · 2026

Who Still Changes Their Clocks

A world map of every country that moves its clocks in 2026 — who observes daylight saving, who only partially does, and the growing majority who don’t.

Step chart of a location's UTC offset drifting across the years

Interactive chart · any location

Your Clock Through the Years

Enter any city — or use your own — and watch every daylight-saving jump, war-time plateau, and zone realignment your clock has lived through, computed live in your browser from the IANA time-zone database.

Step chart of New York's UTC offset from 1776 to 2030

Interactive chart · IANA tz data

New York Clock Time, 1776–2030

Every shift in New York’s offset from UTC since 1776 — local mean time, the Day of Two Noons, two world wars, and the modern spring-forward rhythm.

Step chart of Pike County Indiana's UTC offset, colored by time zone

Interactive chart · IANA tz data

The Strangest Clock in the Lower 48

Pike County, Indiana flipped between Central and Eastern six times and froze on Eastern Standard Time for 28 years. The contiguous-US zone that changed its mind most.

Fireworks over Independence Hall above a thirteen-star flag, 1776 to 2026

Animated tribute · July 4, 2026

America 250

An animated tribute to the 250th anniversary of American independence — fireworks over Independence Hall and a scrollable timeline of the American experiment.