If both a task calendar and a resource calendar are applied to a task but they have no working times in common - for example , the task calendar ' s only working days are monday and tuesday , and the resource calendar ' s only working days are wednesday , thursday , and friday - microsoft project displays an alert message 如果为某项任务同时分配了任务日历和资源日历,但这两个日历无共同的工作时间(譬如任务日历中的工作日仅为星期一和星期二,而资源日历中的工作日仅为星期三、星期四和星期五) , microsoftproject将显示警告信息。