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How Many Days Until World Space Week?

Live astronomical countdown and cosmic facts for the next Global Celebration.

46 Days Left
Target Date: Sunday, October 4, 2026
Last verified: Wednesday, August 19, 2026

⏱️ Time Breakdown

  • Total Months span: ~1.5 months
  • Total Weeks factor: 6.6 weeks
  • Business Days Left: 32 Days
  • Target Day: Sunday

📖 About World Space Week

World Space Week runs every year from October 4 through October 10, a full week rather than a single day. The United Nations General Assembly declared it in 1999, and the two dates that bookend the week were both chosen deliberately. October 4 marks the anniversary of the 1957 launch of Sputnik 1, the first human made satellite, which opened the space age. October 10 marks the anniversary of the 1967 entry into force of the Outer Space Treaty, the foundational international agreement governing the peaceful use of outer space.

How It's Observed

Events happen worldwide and are coordinated loosely rather than centrally, space agencies, museums, schools, and astronomy clubs organize their own activities, talks, and open houses during the week, often themed around a topic chosen annually by the World Space Week Association.

Related

Draconids, Carl Sagan Day, Space Exploration Day

Frequently Asked Questions

When does World Space Week start in 2026? −
Sunday, October 4, 2026, and it runs through October 10.
Why does World Space Week run October 4 to 10 specifically? +
October 4 marks the 1957 launch of Sputnik 1, the first artificial satellite. October 10 marks the 1967 entry into force of the Outer Space Treaty, the core international law governing space activity.
Who declared World Space Week? +
The United Nations General Assembly, in 1999.
Is World Space Week a public holiday? +
No, it's an awareness observance marked through events and educational programs, not a day off work or school.