IMF will cut global economic growth forecast next week.

https://www.publicfinanceinternational.org/news/2018/10/lagarde-hints-imf-set-cut-global-growth-forecast

This is an important event because the magnitude of the cut will send chills to the backbone of the economic growth engine.

If the forecast is revised down slightly, then it's a non-event but if the cut is more than expected, it will signal that the recession is coming.