Two arrows forming a circle, pointing in an anticlockwise direction. Similar to symbols sometimes used for refresh or rotate. May also be used to indicate a task is in progress.
Previously showed in a clockwise direction on Windows.
📅 Counterclockwise Arrows Button was approved as part of Unicode 6.0 in 2010
under the name “Anticlockwise Downwards and Upwards Open Circle Arrows”
and added to Emoji 1.0 in 2015.