UTC date
2026-06-30
☄️ Holiday countdown
A June 30 UTC countdown for astronomy, space education, science outreach, and museum calendars.
Countdown
Target: Jun 30, 2026, 00:00:00
Local target
Jun 30, 2026, 00:00:00
UTC target
30/06/2026 00:00:00 UTC
Unix seconds
1782777600
Unix milliseconds
1782777600000
International Asteroid Day 2026 is counted down to Tuesday, June 30, 2026 at 12:00 AM UTC. The canonical URL keeps the year in the path, so International Asteroid Day 2026 and International Asteroid Day 2027 are separate target-date pages.
2026-06-30
Fixed calendar date: June 30.
Share this fixed holiday page when the date is public; use the custom countdown for private launches and deadlines.