As of April 13, the House Appropriations Committee plans to mark up the FY2027 Defense bill on June 11, 2026 at 9:00 am ET.  The subcommittee markup is closed. Full …

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July 3, 2026 is a Federal holiday in observance of Independence Day, which is Saturday, July 4, and government offices will be closed. Independence Day celebrates the adoption of the Declaration …

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The 2026 Farnborough International Airshow (FIA) will take place in Farnborough, UK from July 20-24, 2026. More information is on the event's website.

Explore Mars's annual Humans to the Moon and Mars (H2M2) Summit will take place July 21-23, 2026. For the first time it will be held at Rice University in Houston, …

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The 2026 NASA Exploration Science Forum (NESF) will take place at NASA's Ames Research Center in Mountain View, CA from July 21-23, 2026. More information is on the event's website, …

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The Committee on Space Research (COSPAR) will hold its 2026 Scientific Assembly in Florence, Italy from August 1-9, 2026. More information and the agenda are on the COSPAR website. An …

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The 2026 Taiwan Lunar Symposium will take place August 9-13, 2026 at Sun Moon Lake, Taiwan. More information is on the event's website.

The 4th Texas Area Planetary Science (TAPS) meeting will take place at the University of Texas at Austin in Austin, TX from August 20-21, 2026. More information is in the …

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September 7, 2026 is a U.S. Federal holiday, Labor Day.  Government offices will be closed. According to the Department of Labor: “Observed the first Monday in September, Labor Day is an …

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The 2026 International Observe the Moon Night will take place globally on September 19, 2026. More information is on NASA’s Observe the Moon website.

The 2026 Texas Space Summit will take place at the Henry B. Gonzalez Convention Center in San Antonio, TX from September 21-23. 2026. More information is on the event's website, …

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SpaceCHI, "the world's first conference dedicated to advancing human-computer interaction in space exploration," will take place September 24-25, 2026 at NASA's Ames Conference Center Building 3, 500 Severyns Ave., Moffett …

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World Space Week takes place every year from October 4-10 to mark the beginning of the Space Age on October 4, 1957 with the launch of Sputnik by the Soviet …

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The 2026 International Astronautical Congress (IAC) will take place in Antalya, Türkiye from October 5-9, 2026. More information is on the IAC website.

October 12, 2026 is a U.S. Federal holiday. The Office of Personnel Management refers to this as Columbus Day, honoring Christopher Columbus who is often cited as discovering the New …

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UP/LINK: The SpaceTech Business Summit will take place in New York City from October 20-21, 2026. More information is on the event's website, which says: A November 18, 2025 email …

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Daylight Saving Time will end in the United States on November 1, 2026. Arizona and Hawaii do not observe Daylight Saving Time. For all other states, the clocks will “fall …

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The Secure World Foundation (SWF) will hold the 8th Summit for Space Sustainability from November 4-5, 2026 in Brasilia, Brazil in cooperation with Brazil's space agency, Agência Espacial Brasileira (AEB). …

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November 11, 2026 is a U.S. Federal holiday. Government offices will be closed. Veterans Day honors all who served in the military, whether they served in peace or wartime or …

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The Global Network on Sustainability in Space (GNOSIS) will hold its 2026 conference, GNOSIS26, virtually from November 24-25, 2026. A "Save the Date" email sent in November 2025 says: