deadlines exact fast glass hour hour glass minute sand schedule second time timings when clock hours lake landscape nature numbers trees black business flowing grey groningen hourglass illustration measure object silhouette time-saving vector white concept deadline glasses isolated magic magical sands timer times wood wooden alcoholic bar beer beverage cup drink foam happy hour malt pub refreshing thirst abstract after hours architecture block building busy city construction corporate corporation downtown exterior facade financial floor geometric glimpse industry labour lights modern office offices pattern reflections shiny skyscraper texture toil tower trade view wall white collar windows work workplace