Certificate error on 7 million flights dataset.

[MatteoFilosa]

Everytime I try to access https://vega.github.io/falcon/flights-mapd/ I get Failed to load resource: net::ERR_CERT_DATE_INVALID (when the website is trying to connect to metis.mapd.com/:1 )

[domoritz]

I don't control the instance unfortunately. For now, please use the versions that run entirely in the browser.