World Wide Data Day


World Wide Data Day 2019: Wednesday, 16 October, 00:00-23:59 UTC




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Registration is closed for 2019.  To request further information, please send an e-mail.


LHC World Wide Data Day is a 24-hour span, midnight-to-midnight UTC, in which students from around the world can analyze data from the Large Hadron Collider and share results via an ongoing, 24 hour videoconference with physicist moderators taking shifts in locations around the world.

Who is eligible:

LHC-W2D2 is open to groups of 4 or more high school students who have the aptitude and interest to analyze data from the Large Hadron Collider. We encourage but do not require each group to work with a sponsoring teacher. Groups of university undergraduate (or equivalent) students may also participate. It helps to have studied physics but it is not required. Registration is now closed. Please consider joining us in 2020. Of course, any class can do the measurement on their own at any time.

What happens:

On or before the date above, groups will meet to analyze data using one of the recommended measurements below. All analyses will be of open, public data from the Large Hadron Collider. After data analysis, each group uploads its results at least 30 minutes before the pre-assigned time of their videoconference. Videoconferences are on Vidyo; they are up to 30 minutes long and consist of up to 5 groups plus moderators. Each group has 3 minutes to present results. If there is open time after the presentations and question period, students may stay to chat with the moderators and each other.


Get the information and the materials you need

Recommended LHC measurements:


Messages for group leaders from W2D2 Coordination:

Learn more about the LHC, the detectors, and the physics

Reading materials:



Get the word out