A simple script to show the Fridays (Weekly Option Expiry), of course this is a basic script we can make a few more improvement.

One of many ways to utilize the "dayofweek" variable.

Currently there are no options to draw a vertical line, you can do a background color for the candle.

Future plans - Include monthly option expiry.

Uday C Santhakumar
Open-source script

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 a publication is governed by House Rules. You can favorite it to use it on a chart.

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Want to use this script on a chart?
// Created by UCSgears
// Simple script to show you Fridays (Weekly Options Expiry)
// Will release a version for Monthly Option Expiry

study("UCS_Fridays", overlay = true)

x = dayofweek == 6 ? 1 : 0

plotshape(x, style = shape.xcross, location = location.top, title="Show Me Fridays")