Minus 1 Month Icon in iPhone Style

This is a Minus 1 Month icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,000 icons, all in the same style and quality.
A calendar with two rings on the top and a negative sign next to a one and a lower case m. Located where the days of the month are usually at.