seven P.M.
`` I invite the Arden Foresters to meet with me to-morrow under the greenwood tree , '' said Mr. Whittredge , surveying his badge . `` That 's poetry , go on , '' said Jack . `` I 'll have to fall back into prose to finish . At the foot of Red Hill , at half-past seven P.M. '' `` What tree does he mean ? '' asked Katherine . `` Under the greenwood tree is a poetical figure , '' Mr. Whittredge explained . `` It will be dark at half-past seven , '' said Jack .