Seasonal figures below use a 2025 reference year. Choose a date in the planner above for that day’s times, golden hour, twilight, and daylight milestones.
Seasonal Sun Milestones in Flagstaff
Flagstaff's 7 PM sunsets run from about April 15 to August 27 — 135 evenings in a typical year. Even in midwinter, sunset here never falls before 5 PM on the clock.
Days in Flagstaff first reach 12 hours of daylight around March 16, a few days before the March equinox, and drop back under 12 hours after September 25. Days with at least 14 hours of daylight run from May 14 to July 27. Days with less than 10 hours of daylight run from November 29 to January 11 (44 days).
The Sun's rising point moves along the horizon too. Around the June solstice it rises in the ENE (60°) and sets in the WNW (300°); by the December solstice it rises in the ESE (118°) and sets in the WSW (242°). That is a 58° swing — worth knowing when choosing a west-facing viewpoint for a summer sunset or an east-facing window for winter morning light.
Dates use the 2025 reference year. Clock-time milestones near daylight-saving changes move with the second Sunday in March and the first Sunday in November.
Daylight Through the Year in Flagstaff
Flagstaff sits at 35.19°N, a mid-latitude position that gives it a balanced but noticeable seasonal rhythm. The difference between its longest and shortest day is 4h 45m.
On the summer solstice around June 21, Flagstaff receives 14h 32m of daylight — the longest day of the year. By the winter solstice around December 21, that shrinks to 9h 47m, the shortest day. At the spring and autumn equinoxes, day and night are nearly equal at about 12h 9m, as they are everywhere on Earth.
Sunset moves fastest around September, when it shifts by up to 1.5 minutes a day in Flagstaff, and barely moves for weeks around the solstices. See how sunrise and sunset change through the year for why.
The Sun's Path Over Flagstaff
Where the Sun sits in the sky over Flagstaff depends on the season, and the contrast between summer and winter is set by the city's latitude of 35.19°N. On the summer solstice the midday Sun reaches 78.3° above the horizon in Flagstaff, its highest point of the year. On the winter solstice the midday Sun only reaches 31.4°, sitting much lower in the southern sky and casting long shadows even at noon.
Those roughly 47 degrees separating the summer and winter midday Sun are exactly what give Flagstaff its seasons.
The live sun path at the top of this page shows the Sun's altitude and compass bearing for the current moment or any chosen date.
Earliest and Latest Sunrises and Sunsets in Flagstaff
It is natural to assume Flagstaff sees its latest sunset on the longest day of the year, but it does not. The latest sunset actually falls around June 28 at about 7:45 PM, while the earliest sunset comes around December 5 at roughly 5:14 PM — noticeably before the December solstice.
On the morning side, the earliest sunrise in Flagstaff is around June 12 at 5:11 AM, and the latest sunrise around January 6 at 7:36 AM. The equation of time and daylight saving pull these dates away from the solstices — explained in why the latest sunset isn't on the longest day.
No Clock Changes in Flagstaff
Unlike most of the United States, Flagstaff, Arizona does not observe daylight saving time. Most of Arizona has kept standard time year-round since the late 1960s — the summer evenings are hot enough that an extra hour of evening sun was never popular. (The Navajo Nation, in the state's northeast, is the exception and does change its clocks.)
In practice this means no jarring one-hour jump in sunrise and sunset twice a year. Across the whole year, sunset in Flagstaff only ranges from about 5:14 PM at the earliest to 7:45 PM at the latest — the change residents notice is gradual and driven purely by the Sun, never by the clock.
One side effect worth knowing: the time difference between Flagstaff and cities that do change their clocks shifts twice a year. A place that is normally in the same hour can be an hour off from mid-March to early November, which matters for calls, broadcasts, and travel schedules.
Golden Hour & Blue Hour Photography in Flagstaff
For photographers in Flagstaff, Arizona, the planner shows your selected date's morning and evening golden-hour and blue-hour windows. Choose Today, Tomorrow, or a date in the calendar; all clock times are calculated in Flagstaff's local timezone.
Golden "hour" is a misnomer — its length in Flagstaff depends on the season, because it lasts as long as the Sun takes to climb from the horizon to 6° (or descend back). Around the equinoxes it runs about 33 minutes; near the June solstice, when the Sun rises and sets at a shallower angle, it stretches to roughly 38 minutes, and near the December solstice it lasts about 39 minutes.
See the golden hour guide and blue hour guide for how to plan a shoot around these windows.
Solar Energy Potential in Flagstaff
Under clear skies, Flagstaff, Arizona receives about 5.5 peak sun hours per day averaged across the year — from roughly 2.5 in December up to 8.3 in June. One peak sun hour equals one hour of sunlight at full intensity (1 kW/m²), the standard unit for estimating solar panel output.
Because Flagstaff sits at 35.2°N, a fixed, south-facing panel captures the most energy over the year when tilted at roughly 35° from horizontal — about equal to the latitude. If you adjust the tilt seasonally, flatten to about 20° in summer, when the Sun rides high, and steepen to about 50° in winter, when it stays low.
These are clear-sky upper bounds from Flagstaff's solar geometry, not a forecast; clouds, shading, and equipment lower real output. See what peak sun hours mean.
How Flagstaff Compares
Daylight in Flagstaff swings 4h 45m between the June and December solstices. The median across the 1,847 cities on this site is 5h 16m, so Flagstaff has a 32m gentler seasonal swing than a typical American city. By that measure Flagstaff ranks 1144th of 1,847 nationally, and 2nd of the 38 Arizona cities listed here — counting from the largest swing down.
Flagstaff sits about 6.6° west of 105°W — the meridian Mountain Time (no daylight saving) is built around. Longitude alone therefore puts mean solar noon roughly 26 minutes after clock noon in standard time, so the Sun runs behind the clock here, which is why evenings hold light later than the time zone would suggest. The equation of time then moves true solar noon up to about 16 minutes either side of that through the year.
About Sun Times in Flagstaff
Flagstaff, Arizona, has an estimated urban-area population of 81,235. Its primary county or equivalent is Coconino; its center is at 35.19°N, 111.62°W. Clocks here follow Mountain Time (no daylight saving), which is the timezone all sunrise, sunset, golden-hour and twilight times on this page are shown in.
Times are computed for Flagstaff's city-center coordinates, so towns to the east see each event slightly earlier and towns to the west slightly later; the nearby-cities list above shows the typical gap.