diff --git a/src/index.html b/src/index.html
index fba0b3b..b681845 100644
--- a/src/index.html
+++ b/src/index.html
@@ -23,6 +23,7 @@
     <div class="vblock">
       <div class="hblock">
         <div class="next-break jetbrains-mono" id="nextBreak"></div>
+        <div class="next-break secondary jetbrains-mono" id="shift1End"></div>
         <div class="next-break secondary jetbrains-mono" id="endOfDay"></div>
       </div>
     </div>
diff --git a/src/index.js b/src/index.js
index d33c1bf..29b5800 100644
--- a/src/index.js
+++ b/src/index.js
@@ -17,7 +17,10 @@ const WEEKEND_BREAKS = [
 const WEEKDAY_END_OF_DAY = "23:00";
 const WEEKEND_END_OF_DAY = "22:00";
 
-let clockEl, dateEl, nextBreakEl, endOfDayEl;
+const WEEKDAY_SHIFT1_END = "15:00";
+const WEEKEND_SHIFT1_END = "15:30";
+
+let clockEl, dateEl, nextBreakEl, endOfDayEl, shift1EndEl;
 let breakNodes = [];
 let lastDayKey = "";
 
@@ -55,10 +58,19 @@ function getWorkDayEndForToday(now) {
   return day === 0 || day === 6 ? WEEKEND_END_OF_DAY : WEEKDAY_END_OF_DAY;
 }
 
+function getShift1EndForToday(now) {
+  const day = now.getDay();
+  return day === 0 || day === 6 ? WEEKEND_SHIFT1_END : WEEKDAY_SHIFT1_END;
+}
+
 function getEndOfDayMs(now) {
   return breakMsForToday(getWorkDayEndForToday(now), now);
 }
 
+function getShift1EndMs(now) {
+  return breakMsForToday(getShift1EndForToday(now), now);
+}
+
 function formatDuration(ms) {
   const totalSeconds = Math.floor(ms / 1000);
   const h = Math.floor(totalSeconds / 3600);
@@ -265,7 +277,13 @@ function updateNextBreak() {
   const endOfDayMs = getEndOfDayMs(now);
   const timeUntilEndOfDay = Math.max(0, endOfDayMs - now.getTime());
   endOfDayEl.textContent =
-    "До конца работы · " + formatDuration(timeUntilEndOfDay);
+    "До конца рабочего дня · " + formatDuration(timeUntilEndOfDay);
+
+  const shift1Ms = getShift1EndMs(now);
+  const timeUntilShift1End = Math.max(0, shift1Ms - now.getTime());
+  shift1EndEl.textContent =
+    "До конца смены 1 (" + getShift1EndForToday(now) + ") · " +
+    formatDuration(timeUntilShift1End);
 
   scheduleNextBreakTick();
 }
@@ -292,6 +310,7 @@ function init() {
   dateEl = document.getElementById("currentDate");
   nextBreakEl = document.getElementById("nextBreak");
   endOfDayEl = document.getElementById("endOfDay");
+  shift1EndEl = document.getElementById("shift1End");
 
   buildBreakBlocks();
   buildCalendar();
@@ -314,7 +333,9 @@ if (typeof module !== "undefined" && module.exports) {
   module.exports = {
     getBreaksForToday,
     getWorkDayEndForToday,
+    getShift1EndForToday,
     getEndOfDayMs,
+    getShift1EndMs,
     breakTimeToMinutes,
     formatDuration,
   };