Please select a day from the calendar above to see archived or current status.
Information is available for dates after November 30, 2016.
The Advanced LIGO and Advanced Virgo detectors are currently in the third observing run, known as O3,
which began April 1, 2019. Summaries of previous observing runs are available in the
menu above. For overviews of LIGO and Virgo observing runs, see the