How many minimum overs need for duckworth Lewis rule?

According to the Duckworth-Lewis-Stern (DLS) method, a minimum of 20 overs must be completed in a limited-overs cricket match to apply the rule effectively. If the match is interrupted and fewer than 20 overs have been bowled, the DLS method cannot be used to calculate revised targets. This ensures that there is a sufficient sample size of play to make accurate adjustments based on the resources remaining.