All the monthly standard option expirations dates along with an option to specify a marker for X bars before. This can be used for people to mark expiration week (5 bars) or 21 days (15 bars) to expiry. Works only on daily chart .
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publications is governed by House rules. 님은 즐겨찾기로 이 스크립트를 차트에서 쓸 수 있습니다.