How many days until the next cosmic event?
Find out exactly how many days are left until global space milestones, orbital events, and major meteor showers. Select an event to view its daily day counter.
Autumnal Equinox
Astronomical start of Autumn in the Northern Hemisphere.
World Space Week
International celebration of space science and technology.
Draconid Meteors
A unique meteor shower best viewed in the early evening.
Orionid Meteor Shower
Another spectacular shower originating from Halley's Comet.
Carl Sagan Day
Celebrating the life and work of the famous astronomer.
Leonid Meteor Shower
Known for producing intense meteor storms historically.
Geminid Meteor Shower
The strongest meteor shower of the year, from asteroid 3200 Phaethon.
Winter Solstice
Shortest day of the year in the Northern Hemisphere.
Ursid Meteor Shower
The final meteor shower of the calendar year.
Earth at Perihelion
Earth reaches its closest point to the Sun.
Quadrantid Meteors
Peak of the annual Quadrantid meteor shower.
Pluto Discovery Day
Anniversary of the discovery of Pluto in 1930.
Vernal Equinox
Astronomical start of Spring in the Northern Hemisphere.
Human Space Flight Day
Global celebration of Yuri Gagarin's historic first flight.
Lyrid Meteor Shower
Peak of the Lyrid meteor shower, active since 687 BC.
Hubble Anniversary
Commemorates the deployment of the Hubble Space Telescope in 1990.
Eta Aquariid Meteors
Meteors created by debris from Halley's Comet.
Summer Solstice
Longest day of the year in the Northern Hemisphere.
Asteroid Day
UN-sanctioned global awareness campaign about asteroids.
Earth at Aphelion
Earth reaches its farthest point from the Sun.
Space Exploration Day
Anniversary of the historic Apollo 11 Moon landing.
Perseid Meteor Shower
One of the brightest and most popular annual meteor showers.