A red circle with a diagonal line through the middle, from top-left to bottom right, used to indicate that something is not permitted
Commonly shown in conjunction with other symbols to indicate No Smoking, No Bikes, or similar.
📅 Prohibited was approved as part of Unicode 6.0 in 2010
under the name “No Entry Sign”
and added to Emoji 1.0 in 2015.
Red Circle Crossed,