Quick Fact
Only on the March and September equinoxes does the sun set due west.
That’s right — the whole "sun sets in the west" thing? It’s only spot-on for two days each year. As of 2026, mark your calendar for around March 20th and September 22nd. On those dates, the sun’s path splits day and night perfectly in half. Every other day, it slides a bit north or south of true west, hitting its northern extreme in June and southern extreme in December.
Geographic Context
Earth’s 23.5° axial tilt and eastward rotation create the shifting sunrise and sunset points.
It all comes down to Earth’s lopsided spin. Our planet tilts 23.5° on its axis and spins eastward every 24 hours — that’s why the sun appears to rise in the east and set in the west. But the angle changes with your latitude. Near the equator, the sun drops almost straight down. Up near the poles? It barely dips below the horizon, giving us those endless summer nights in places like northern Norway.
Key Details
Here’s when and where the sun sets in 2026 across key seasonal events.
| Event |
Date (approx. 2026) |
Sun’s setting direction |
Day length (mid-northern latitudes) |
| March Equinox |
≈ 20 March |
Due west |
≈ 12 h 0 min |
| June Solstice |
≈ 21 June |
Northwest |
≈ 15 h 30 min |
| September Equinox |
≈ 22 September |
Due west |
≈ 12 h 10 min |
| December Solstice |
≈ 21 December |
Southwest |
≈ 8 h 45 min |
Interesting Background
The sun’s shifting path helped ancient cultures build calendars and align monuments.
That 23.5° tilt? It’s not random. A long-ago smash with a Mars-sized object not only gave us the Moon but locked in our axial tilt. That tilt makes the sun’s path across the sky — the ecliptic — slant relative to the celestial equator. Ancient builders used this shifting path to line up sunsets with landmarks like pyramids or stone circles. Even now, you can watch the difference by standing in the right spot and watching the sun dip behind a mountain or building during equinoxes versus solstices.
Earth’s rotation isn’t constant, either. It’s slowing down, adding about 1.7 milliseconds per century. That means days are getting longer — and sunsets are happening a little later each year. Go back 100 million years, and a day was only about 23 hours long. Back then, the sun set earlier by today’s clocks. Honestly, this is one of those cool reminders that our planet’s still evolving.
Practical Information
To snap a photo of a due-west sunset, aim for the equinoxes around 6 PM local time.
Want to capture the sun dropping exactly due west? Head out near the March or September equinox and set up around 6 PM local standard time. Just make sure nothing’s blocking your view — even a small hill can nudge the sunset point a few degrees off. And if you’re chasing polar magic? Forget a single sunset. Up in northern Norway or Canada’s Nunavut, the sun lingers in twilight for days or even weeks during parts of the year.
Need precise timing? The U.S. Naval Observatory has you covered. Their online tool spits out sunrise and sunset tables for every U.S. city, plus the exact compass bearing — the azimuth — of where the sun will dip below the horizon on any 2026 date.
Edited and fact-checked by the MeridianFacts editorial team.
