Twice a year, in alignment with the spring and autumn equinoxes, Chicagoans are treated to stunning views of the phenomenon that has come to be known as Chicagohenge–when the rising and setting sun lines up perfectly with the city’s east and west corridors.

The remarkable event is the result of the city’s architecture and the patterns of the sun. Because Chicago’s street grid matches up with the cardinal east and west directions on a compass, when the sun is in equinox position–when both the northern and southern hemispheres receive equal amounts of sunlight–viewers can catch a glowing sunrise and sunset framed picturesquely between the manmade “valleys” created by the city’s iconic skyscrapers.

It’s the perfect way to welcome a new season. Here’s where to catch it in 2023:

WHEN AND WHERE

When:

Chicagohenge happens twice a year, in March and September. This year, the spring equinox falls on March 20, and peak viewing times are between March 19 and 21. You can find the sunrise and sunset times below, but the phenomenon can be seen leading up to, and after these times as well.

• March 19: Sunrise at 6:55 am, sunset at 7:01 pm.
• March 20: Sunrise at 6:54 am, sunset at 7:02 pm.
• March 21: Sunrise at 6:52 am, sunset at 703 pm.

Where:

Any east-west corridor in the city will give you a glimpse of the spectacle, but the following locations will give you optimal views:

• Between Kinzie and Madison
• Randolph Street between N State St. and N Michigan Avenue
• Along Washington Street from Millennium Park
• W Adams Street

Here’s hoping for clear skies and open sightlines! Happy Spring!