Daily Build · Civic / Data Toy
Clocks fall back on Sunday, November 1, and every year someone proposes ending the switch. Draw a whole year of sunrise and sunset as one ribbon, mark when a morning or evening feels too dark, and see what each clock policy does: switch twice a year, standard time all year, or DST all year.
A sky toy, not an almanac: sun times use the standard NOAA approximation (typically within a minute or two at mid-latitudes), at sea level, with a UTC offset and DST rule you type in. Nothing leaves your browser.
Time of day runs top (midnight) to bottom (midnight). The ribbon's top edge is sunrise and its bottom edge is sunset, and it jumps an hour at each clock change. Purple wedges are mornings when the sun comes up after your line. Red wedges are evenings when it sets before your line. Tap or drag to pick a day.