Earned Schedule (ES) is a powerful method that helps the executive, program manager, project manager, and other stakeholders in managing projects, programs, and portfolios more effectively. ES allows EVM metrics to be transformed to time or duration metrics to enhance the evaluation of project schedule performance, forecast the duration needed to complete the project, augment the project manager's understanding of the time estimate at completion of the project, and provide further insights for making better, evidence-based decisions about the project schedule and other parameters.