Passenger-facing articles usually describe Agra Metro as running from about 6:00 AM to 10:00 PM. Peak headways are often quoted around 7–10 minutes, off-peak 10–15 minutes on the open Yellow Line stretch.
First and last train at a mid station are not the same as at Taj East Gate or Mankameshwar. If you must catch a 9:40 PM train at Agra Cantt, do not assume a 9:50 PM metro still exists at Fatehabad Road.
Festival crowds around Taj Mahal can change dwell time. UPMRC may publish special instructions; this page will not invent extra late-night services.