Why the calendar matters
A holiday is not just a day off for the market. Settlement runs on a T+2 cycle through NCCPL, so a closed day pushes settlement dates out — money and shares arrive later than a naive count of calendar days suggests. Book closures for dividends are counted in working days too, and a results-season board meeting scheduled just before a long break can leave a stock untraded on fresh news for three or four days. The long weekends — Eid-ul-Fitr in March, Eid-ul-Azha in May, Ashura in June — are the ones that most often catch out investors who plan by the calendar month instead of the trading calendar. Our daily price updates skip these days automatically: no trading day, no new prices.