How often is the calendar updated?

Content is reviewed regularly. New conferences, astronomy events, and anniversary dates are added as they are confirmed.

Where does the astronomy event data come from?

Astronomy dates are verified against data from NASA, the European Space Agency, and recognized international astronomy organizations.

Can I add the calendar to Google Calendar?

Yes. Use the iCal export or the Google Calendar sync option to subscribe and receive automatic updates when new events are added.

Does it cover events worldwide or only certain regions?

Global events are listed by default. Astronomy observation events can be filtered by your geographic location for local visibility windows.

Can I suggest an event to be added?

Yes. Use the suggestion form to submit a scientific event or anniversary. Approved submissions are added to the calendar after editorial review.

Is the tool free to use?

Completely free, with no account or subscription needed.

What is the difference between historic anniversaries and upcoming events?

Historic anniversaries mark the date of past scientific milestones, while upcoming events are future occurrences such as eclipses, conferences, or grant deadlines.

Today in science history — Free Online

⚡

⭐ Featured today · 20 July

Apollo 11 landed on the Moon (the first crewed landing)

Event · 1969 · 57 years ago

Day

Month

Region

Type

📖 In the history of science

20 July

1 event(s)

⚡Event · 1969US

Apollo 11 landed on the Moon (the first crewed landing)

57 yrs ago

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