It's impossible to say definitively which constellation is "for" April 17th without knowing your location.

Here's why:

* Constellations are not static: The constellations we see in the sky change throughout the year due to the Earth's rotation and orbit around the sun.

* Location Matters: Different constellations are visible from different parts of the world at the same time.

To determine the constellations visible on April 17th, you'll need to provide your location (latitude and longitude or city/region).

Then, you can use a stargazing app or website like Stellarium (stellarium-web.org) to find out what constellations are visible in your sky on that date.