The sunset of today marks a significant point in the spring calendar for the Northern Hemisphere. As of April 16, 2026, the tilt of the Earth is rapidly increasing the duration of daylight for those north of the equator, while our counterparts in the Southern Hemisphere are experiencing the encroaching chill of autumn with earlier sunsets. Understanding the exact timing of the sun’s descent is more than just a matter of looking at a clock; it is about synchronizing with the atmospheric shifts that define the transition from day to night.

Estimated Sunset Times for Major Global Cities

Because the sunset of today depends entirely on your specific latitude and longitude, times vary significantly across the globe. Based on orbital mechanics for mid-April, here are the approximate sunset times for several key locations. Note that local atmospheric refraction and elevation can cause these times to fluctuate by a minute or two.

  • London, United Kingdom: Expected around 8:01 PM BST. The city is enjoying noticeably longer evenings as it moves further away from the spring equinox.
  • New York City, USA: Predicted for approximately 7:38 PM EDT. The "golden hour" in Manhattan will begin shortly after 6:30 PM, offering that iconic warm glow against the skyline.
  • Chicago, Illinois: Residents can expect the sun to dip below the horizon at about 7:36 PM CDT. The flat terrain of the Midwest often allows for a prolonged viewing of the solar disc.
  • Tokyo, Japan: Sunset occurs earlier here, around 6:15 PM JST.
  • Sydney, Australia: As it is autumn in the Southern Hemisphere, the sunset comes much earlier, around 5:30 PM AEST.
  • Los Angeles, California: The Pacific horizon will swallow the sun at approximately 7:28 PM PDT.

These times represent the moment the upper limb of the sun disappears below the ideal horizon. However, the light does not vanish instantly, leading us into the complex and beautiful stages of twilight.

The Three Stages of Twilight Following Today's Sunset

When most people search for the sunset of today, they are actually interested in the lingering light that follows. Twilight is scientifically divided into three distinct phases, each defined by how many degrees the sun is below the horizon.

1. Civil Twilight (0° to 6° below horizon)

This is the period immediately after sunset. During civil twilight, there is enough natural light for most outdoor activities to continue without artificial illumination. The sky often displays vibrant oranges and pinks. For the sunset of today, civil twilight typically lasts between 25 to 35 minutes depending on your distance from the equator.

2. Nautical Twilight (6° to 12° below horizon)

During this stage, the horizon becomes difficult to distinguish, and the brightest stars begin to appear. Historically, this was the time when sailors could use the stars to navigate while still seeing a faint horizon line. The sky transitions into a deep, velvety blue.

3. Astronomical Twilight (12° to 18° below horizon)

This is the final stage before true mathematical night. To the casual observer, the sky looks dark, but for astronomers, there is still a faint amount of solar scattering that interferes with the observation of faint nebulae or distant galaxies. Once the sun passes 18 degrees below the horizon, total darkness is achieved.

Predicting the Quality of the Sunset of Today

Not all sunsets are created equal. The visual splendor of the sunset of today is determined by a combination of meteorological factors. If you are planning a photography session or a scenic walk, consider these elements:

Cloud Cover and Altitude

High-altitude clouds, such as cirrus or altocumulus, are the best canvases for a spectacular sunset. Because they are high in the atmosphere, they catch the sun's rays long after the ground level is in shadow, reflecting brilliant reds and purples. Conversely, thick, low-level clouds (stratus) often "block" the sunset, resulting in a dull, grey transition to night.

Humidity and Air Quality

Clean air tends to produce more orange and yellow sunsets. This is due to Rayleigh scattering, where shorter blue wavelengths are dispersed, leaving the longer red wavelengths to reach our eyes. However, a moderate amount of aerosols—such as dust or sea salt—can enhance the scattering effect (Mie scattering), potentially deepening the reds. Too much pollution or heavy humidity, however, can make the sky appear muddy.

The "Green Flash" Phenomenon

On rare occasions, particularly when viewing the sunset of today over a flat ocean horizon, you might witness the "Green Flash." This is a brief optical illusion caused by the refraction of light through the atmosphere, acting like a prism. The red light is obstructed by the Earth, leaving the green light visible for a fraction of a second just as the sun disappears.

The Creator’s Window: Golden Hour and Blue Hour

For visual artists, the sunset of today is the anchor point for two critical lighting windows:

  • The Golden Hour: Roughly the hour before sunset and the 15-20 minutes after. The sun’s low angle creates long, soft shadows and a warm color temperature that is universally flattering for portraits and landscapes.
  • The Blue Hour: Occurring during the middle of civil twilight, the light takes on a cool, blue hue. This is the preferred time for urban photography, as the blue sky provides a perfect contrast to the warm artificial lights of buildings and streetlamps.

Why Sunset Times Change Every Day

The variation in the timing of the sunset of today compared to yesterday is driven by the Earth's axial tilt (23.5 degrees) and its elliptical orbit around the sun. In mid-April, the Northern Hemisphere is tilting more directly toward the sun each day. This causes the sun's path across the sky to become higher and longer.

In high-latitude cities like Stockholm or Edmonton, the sunset time might shift by as much as three minutes per day during this time of year. Near the equator, the change is almost negligible, often less than 30 seconds. This is why a "sunset of today" query is so vital; a schedule from just a week ago would already be significantly inaccurate.

Practical Tips for Sunset Watching

  1. Arrive Early: The most dramatic light often happens 20 minutes before the sun actually sets. This is when the undersides of clouds begin to catch color.
  2. Look Behind You: Often, the most beautiful part of the sunset isn't the sun itself, but the "Belt of Venus"—a pinkish glow in the eastern sky caused by backscattering of light.
  3. Check the Barometer: Rapidly falling pressure often precedes a storm, which can bring dramatic cloud formations that make for high-quality sunset colors once the front starts to break.
  4. Protect Your Eyes: Never look directly at the sun through a telephoto lens or binoculars until it is extremely low on the horizon and filtered by heavy atmosphere, as permanent eye damage can occur.

Frequently Asked Questions About Today's Sunset

Does elevation affect sunset time? Yes. If you are on top of a mountain or in a high-rise building, you will see the sun set several minutes later than someone at sea level. For every 1,000 meters of elevation, the sunset is delayed by approximately one minute.

Is the sunset of today at the same time as the sunset of last year? Almost, but not quite. While the Earth's orbit is consistent, the leap year cycle and minor orbital perturbations mean the sunset time on April 16, 2026, may differ by a few seconds or a minute from April 16, 2025.

What causes the sun to look larger at sunset? This is the "Moon Illusion" applied to the sun. It is a psychological perception. When the sun is near the horizon, your brain compares it to terrestrial objects (trees, buildings), making it appear much larger than when it is high in the empty sky.

As the sunset of today approaches, take a moment to step outside and observe the shift in light. Whether you are in the heart of a bustling city or on a quiet coastline, the daily transition remains one of the most accessible and profound displays of planetary physics in action.