diff --git a/services/pcp-tgu-ui-service/src/features/tgu-slots/TguSlotsTab.tsx b/services/pcp-tgu-ui-service/src/features/tgu-slots/TguSlotsTab.tsx
index 46f14fb..62d4479 100644
--- a/services/pcp-tgu-ui-service/src/features/tgu-slots/TguSlotsTab.tsx
+++ b/services/pcp-tgu-ui-service/src/features/tgu-slots/TguSlotsTab.tsx
@@ -23,7 +23,7 @@ import type { Tgu2DMapLayersState } from "../tgu-map-2d/model/mapLayerTypes";
 import type { Tgu2DMapSelection } from "../tgu-map-2d/model/mapSelectionTypes";
 import { MapObjectInspector } from "../tgu-map-2d/MapObjectInspector";
 import { Tgu2DMapView } from "../tgu-map-2d/Tgu2DMapView";
-import { formatLocalDateTime, parseLocal, toLocalInputValue, toLocalIso } from "../../utils/localTime";
+import { formatLocalDateTimeSeconds, parseLocal, toLocalInputValue, toLocalIso } from "../../utils/localTime";
 import { SlotDaySelector, type SlotDay } from "./SlotDaySelector";
 import { SlotPickMenu, type SlotPick } from "./SlotPickMenu";
 import { chunk, selectionAfterCheck } from "./slotSelection";
@@ -830,9 +830,8 @@ export function TguSlotsTab({ range }: TguSlotsTabProps) {
                         </th>
                         <th>КА</th>
                         <th>Виток</th>
-                        <th>Слот / цикл</th>
                         <th>Начало</th>
-                        <th>Конец</th>
+                        <th>Длит.</th>
                         <th>Крен</th>
                         <th>Статус</th>
                       </tr>
@@ -840,7 +839,7 @@ export function TguSlotsTab({ range }: TguSlotsTabProps) {
                     <tbody>
                       {padTop > 0 && (
                         <tr aria-hidden="true" style={{ height: padTop }}>
-                          <td colSpan={8} />
+                          <td colSpan={7} />
                         </tr>
                       )}
                       {virtualRows.map((vrow) => {
@@ -868,13 +867,11 @@ export function TguSlotsTab({ range }: TguSlotsTabProps) {
                             </td>
                             <td>{slot.satelliteId}</td>
                             <td>
-                              {slot.revolution} / {slot.revolutionSign === "DESC" ? "нисх" : "восх"}
+                              {slot.revolution} / {slot.revolutionSign === "DESC" ? "нисх" : "восх"} /{" "}
+                              {slot.cycle}
                             </td>
-                            <td>
-                              {slot.slotNumber} / {slot.cycle}
-                            </td>
-                            <td>{formatLocalDateTime(parseLocal(slot.tn))}</td>
-                            <td>{formatLocalDateTime(parseLocal(slot.tk))}</td>
+                            <td>{formatLocalDateTimeSeconds(parseLocal(slot.tn))}</td>
+                            <td>{slotDurationSec(slot)} с</td>
                             <td>{slot.roll.toFixed(1)}°</td>
                             <td>
                               {booked ? (
@@ -888,7 +885,7 @@ export function TguSlotsTab({ range }: TguSlotsTabProps) {
                       })}
                       {padBottom > 0 && (
                         <tr aria-hidden="true" style={{ height: padBottom }}>
-                          <td colSpan={8} />
+                          <td colSpan={7} />
                         </tr>
                       )}
                     </tbody>
@@ -1040,6 +1037,11 @@ function strategyLabel(strategy: SlotCoverageStrategy): string {
   return strategy === "CONTINUOUS" ? "непрерывный" : "жадный";
 }
 
+/** Длительность слота в секундах (tk − tn). Слоты короткие, поэтому показываем секунды. */
+function slotDurationSec(slot: SlotDTO): number {
+  return Math.max(0, Math.round((parseLocal(slot.tk) - parseLocal(slot.tn)) / 1000));
+}
+
 function slotStateLabel(state: string): string {
   switch (state) {
     case "AVAILABLE":
diff --git a/services/pcp-tgu-ui-service/src/utils/localTime.ts b/services/pcp-tgu-ui-service/src/utils/localTime.ts
index 35e5364..fe249e4 100644
--- a/services/pcp-tgu-ui-service/src/utils/localTime.ts
+++ b/services/pcp-tgu-ui-service/src/utils/localTime.ts
@@ -31,6 +31,18 @@ export function formatLocalDateTime(ms: number): string {
   });
 }
 
+/** Дата-время с секундами (дд.мм.гггг, чч:мм:сс) — для коротких слотов, где важны секунды. */
+export function formatLocalDateTimeSeconds(ms: number): string {
+  return new Date(ms).toLocaleString("ru-RU", {
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit",
+    hour: "2-digit",
+    minute: "2-digit",
+    second: "2-digit"
+  });
+}
+
 /** Дата (дд.мм) в локальной зоне. */
 export function formatLocalDate(ms: number): string {
   return new Date(ms).toLocaleDateString("ru-RU", { day: "2-digit", month: "2-digit" });