St. Louis Astronomical Society

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Astronomical Society of the Pacific

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Date: Monday, April 20, 2026

Time: 8:30 p.m. - 9:30 p.m. Central

Location: Oak Knoll Park
1 Oak Knoll Park
Clayton, MO 63105

Legend:

Moon

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

Pluto

Legend:

Moon

Mercury

Venus

Earth

Mars

Jupiter

Saturn

Uranus

Neptune

Pluto

This chart represents the sky one hour after sunset on April 20, 2026 at the event location.

Chart generated from Your Sky.

Sat 4/18/2026

8 p.m. - 8 p.m. Central

AIM FOR THE STARS at Jefferson College Observatory Jefferson College Observatory
9873 Farm Road Hillsboro, MO

Sun 4/19/2026

11 a.m. - 3 p.m. Central

Mon 4/20/2026

8:30 p.m. - 9:30 p.m. Central

Star Party at Oak Knoll Park Oak Knoll Park
1 Oak Knoll Park Clayton, MO

Mon 4/20/2026

8 p.m. - 9:30 p.m. Central

Stargazing at Bluebird Park Bluebird Park
225 Kiefer Creek Road Ellisville, MO