diff --git a/public/calendar.js b/public/calendar.js
new file mode 100644
index 0000000..dbeb366
--- /dev/null
+++ b/public/calendar.js
@@ -0,0 +1,164 @@
+// Календарь
+class Calendar {
+  constructor() {
+    this.currentDate = new Date();
+    this.selectedDate = new Date();
+    this.today = new Date();
+    this.init();
+  }
+
+  init() {
+    this.calendarTitle = document.getElementById("calendarTitle");
+    this.calendarDays = document.getElementById("calendarDays");
+    this.prevMonthBtn = document.getElementById("prevMonth");
+    this.nextMonthBtn = document.getElementById("nextMonth");
+
+    this.prevMonthBtn.addEventListener("click", () => this.previousMonth());
+    this.nextMonthBtn.addEventListener("click", () => this.nextMonth());
+
+    this.render();
+  }
+
+  previousMonth() {
+    this.currentDate.setMonth(this.currentDate.getMonth() - 1);
+    this.render();
+  }
+
+  nextMonth() {
+    this.currentDate.setMonth(this.currentDate.getMonth() + 1);
+    this.render();
+  }
+
+  render() {
+    this.renderTitle();
+    this.renderDays();
+  }
+
+  renderTitle() {
+    const monthNames = [
+      "Январь",
+      "Февраль",
+      "Март",
+      "Апрель",
+      "Май",
+      "Июнь",
+      "Июль",
+      "Август",
+      "Сентябрь",
+      "Октябрь",
+      "Ноябрь",
+      "Декабрь",
+    ];
+    const month = monthNames[this.currentDate.getMonth()];
+    const year = this.currentDate.getFullYear();
+    this.calendarTitle.textContent = `${month} ${year}`;
+  }
+
+  renderDays() {
+    this.calendarDays.innerHTML = "";
+
+    // Первый день месяца
+    const firstDay = new Date(
+      this.currentDate.getFullYear(),
+      this.currentDate.getMonth(),
+      1
+    );
+    // Последний день месяца
+    const lastDay = new Date(
+      this.currentDate.getFullYear(),
+      this.currentDate.getMonth() + 1,
+      0
+    );
+    // Число дней в месяце
+    const daysInMonth = lastDay.getDate();
+    // День недели, на который выпадает 1-е число месяца (0 - понедельник в нашей системе)
+    let startingDayOfWeek = firstDay.getDay() - 1; // Преобразуем так, чтобы понедельник был 0
+    if (startingDayOfWeek === -1) startingDayOfWeek = 6; // Воскресенье = 6
+
+    // Добавляем дни из предыдущего месяца
+    const prevLastDay = new Date(
+      this.currentDate.getFullYear(),
+      this.currentDate.getMonth(),
+      0
+    ).getDate();
+    for (let i = startingDayOfWeek - 1; i >= 0; i--) {
+      const dayDiv = document.createElement("div");
+      dayDiv.classList.add("calendar-day", "other-month");
+      dayDiv.textContent = prevLastDay - i;
+      this.calendarDays.appendChild(dayDiv);
+    }
+
+    // Добавляем дни текущего месяца
+    for (let day = 1; day <= daysInMonth; day++) {
+      const dayDiv = document.createElement("div");
+      dayDiv.classList.add("calendar-day");
+      dayDiv.textContent = day;
+
+      const currentCellDate = new Date(
+        this.currentDate.getFullYear(),
+        this.currentDate.getMonth(),
+        day
+      );
+
+      // Проверяем, сегодняшний ли это день
+      if (this.isToday(currentCellDate)) {
+        dayDiv.classList.add("today");
+      }
+
+      // Проверяем, выбранный ли это день
+      if (this.isSelected(currentCellDate)) {
+        dayDiv.classList.add("selected");
+      }
+
+      // Добавляем обработчик клика
+      dayDiv.addEventListener("click", () => this.selectDate(currentCellDate));
+
+      this.calendarDays.appendChild(dayDiv);
+    }
+
+    // Добавляем дни из следующего месяца
+    const totalCells = this.calendarDays.children.length;
+    const remainingCells = 42 - totalCells; // 6 строк * 7 дней = 42
+    for (let day = 1; day <= remainingCells; day++) {
+      const dayDiv = document.createElement("div");
+      dayDiv.classList.add("calendar-day", "other-month");
+      dayDiv.textContent = day;
+      this.calendarDays.appendChild(dayDiv);
+    }
+  }
+
+  isToday(date) {
+    return (
+      date.getDate() === this.today.getDate() &&
+      date.getMonth() === this.today.getMonth() &&
+      date.getFullYear() === this.today.getFullYear()
+    );
+  }
+
+  isSelected(date) {
+    return (
+      date.getDate() === this.selectedDate.getDate() &&
+      date.getMonth() === this.selectedDate.getMonth() &&
+      date.getFullYear() === this.selectedDate.getFullYear()
+    );
+  }
+
+  selectDate(date) {
+    this.selectedDate = new Date(date);
+    this.render();
+    // Вы можете добавить дополнительную логику здесь, например, фильтрацию заметок по дате
+    console.log("Выбрана дата:", this.formatDate(date));
+  }
+
+  formatDate(date) {
+    const day = String(date.getDate()).padStart(2, "0");
+    const month = String(date.getMonth() + 1).padStart(2, "0");
+    const year = date.getFullYear();
+    return `${day}.${month}.${year}`;
+  }
+}
+
+// Инициализируем календарь при загрузке страницы
+document.addEventListener("DOMContentLoaded", function () {
+  new Calendar();
+});
diff --git a/public/notes.html b/public/notes.html
index b97f309..d16e240 100644
--- a/public/notes.html
+++ b/public/notes.html
@@ -39,39 +39,64 @@
           </form>
         </div>
       </header>
-      <div class="main">
-        <div class="markdown-buttons">
-          <button class="btnMarkdown" id="boldBtn">
-            <i class="fas fa-bold"></i>
-          </button>
-          <button class="btnMarkdown" id="italicBtn">
-            <i class="fas fa-italic"></i>
-          </button>
-          <button class="btnMarkdown" id="headerBtn">
-            <i class="fas fa-heading"></i>
-          </button>
-          <button class="btnMarkdown" id="listBtn">
-            <i class="fas fa-list-ul"></i>
-          </button>
-          <button class="btnMarkdown" id="quoteBtn">
-            <i class="fas fa-quote-right"></i>
-          </button>
-          <button class="btnMarkdown" id="codeBtn">
-            <i class="fas fa-code"></i>
-          </button>
-          <button class="btnMarkdown" id="linkBtn">
-            <i class="fas fa-link"></i>
-          </button>
-        </div>
 
-        <textarea
-          class="textInput"
-          id="noteInput"
-          placeholder="Ваша заметка..."
-        ></textarea>
-        <div class="save-button-container">
-          <button class="btnSave" id="saveBtn">Сохранить</button>
-          <span class="save-hint">или нажмите Alt + Enter</span>
+      <div class="main-wrapper">
+        <!-- Календарь слева -->
+        <aside class="calendar-sidebar">
+          <div class="calendar-container">
+            <div class="calendar-header">
+              <button id="prevMonth" class="calendar-nav-btn">&lt;</button>
+              <h3 id="calendarTitle"></h3>
+              <button id="nextMonth" class="calendar-nav-btn">&gt;</button>
+            </div>
+            <div class="calendar-weekdays">
+              <div class="weekday">Пн</div>
+              <div class="weekday">Вт</div>
+              <div class="weekday">Ср</div>
+              <div class="weekday">Чт</div>
+              <div class="weekday">Пт</div>
+              <div class="weekday">Сб</div>
+              <div class="weekday">Вс</div>
+            </div>
+            <div id="calendarDays" class="calendar-days"></div>
+          </div>
+        </aside>
+
+        <!-- Основной контент с формой заметки -->
+        <div class="main">
+          <div class="markdown-buttons">
+            <button class="btnMarkdown" id="boldBtn">
+              <i class="fas fa-bold"></i>
+            </button>
+            <button class="btnMarkdown" id="italicBtn">
+              <i class="fas fa-italic"></i>
+            </button>
+            <button class="btnMarkdown" id="headerBtn">
+              <i class="fas fa-heading"></i>
+            </button>
+            <button class="btnMarkdown" id="listBtn">
+              <i class="fas fa-list-ul"></i>
+            </button>
+            <button class="btnMarkdown" id="quoteBtn">
+              <i class="fas fa-quote-right"></i>
+            </button>
+            <button class="btnMarkdown" id="codeBtn">
+              <i class="fas fa-code"></i>
+            </button>
+            <button class="btnMarkdown" id="linkBtn">
+              <i class="fas fa-link"></i>
+            </button>
+          </div>
+
+          <textarea
+            class="textInput"
+            id="noteInput"
+            placeholder="Ваша заметка..."
+          ></textarea>
+          <div class="save-button-container">
+            <button class="btnSave" id="saveBtn">Сохранить</button>
+            <span class="save-hint">или нажмите Alt + Enter</span>
+          </div>
         </div>
       </div>
     </div>
@@ -85,5 +110,6 @@
     </div>
     <script src="https://cdnjs.cloudflare.com/ajax/libs/marked/11.1.0/marked.min.js"></script>
     <script src="/app.js"></script>
+    <script src="/calendar.js"></script>
   </body>
 </html>
diff --git a/public/style.css b/public/style.css
index 23a58a0..afebf1c 100644
--- a/public/style.css
+++ b/public/style.css
@@ -295,6 +295,7 @@ textarea:focus {
 /* Стили для личного кабинета */
 .profile-container {
   margin-top: 20px;
+  padding-bottom: 80px; /* Отступ снизу, чтобы контент не обрезался футером */
 }
 
 .avatar-section {
@@ -306,6 +307,9 @@ textarea:focus {
 
 .avatar-wrapper {
   margin-bottom: 15px;
+  display: flex;
+  justify-content: center;
+  align-items: center;
 }
 
 .avatar-preview {
@@ -321,7 +325,7 @@ textarea:focus {
   height: 150px;
   border-radius: 50%;
   background-color: #e0e0e0;
-  display: inline-flex;
+  display: flex;
   align-items: center;
   justify-content: center;
   font-size: 64px;
@@ -435,3 +439,174 @@ textarea:focus {
   color: #007bff;
   text-decoration: underline;
 }
+
+/* Стили для календаря */
+.main-wrapper {
+  display: flex;
+  gap: 20px;
+  align-items: flex-start;
+  width: 100%;
+}
+
+.calendar-sidebar {
+  flex-shrink: 0;
+  width: 240px;
+}
+
+.calendar-container {
+  background: white;
+  border: 1px solid #e0e0e0;
+  border-radius: 8px;
+  padding: 15px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
+}
+
+.calendar-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 15px;
+  gap: 10px;
+}
+
+.calendar-header h3 {
+  margin: 0;
+  font-size: 14px;
+  font-weight: 600;
+  color: #333;
+  min-width: 120px;
+  text-align: center;
+  flex: 1;
+}
+
+.calendar-nav-btn {
+  background: #f0f0f0;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  padding: 4px 8px;
+  cursor: pointer;
+  font-size: 14px;
+  color: #333;
+  transition: all 0.2s ease;
+}
+
+.calendar-nav-btn:hover {
+  background: #007bff;
+  color: white;
+  border-color: #007bff;
+}
+
+.calendar-weekdays {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 2px;
+  margin-bottom: 10px;
+}
+
+.weekday {
+  text-align: center;
+  font-size: 11px;
+  font-weight: 600;
+  color: #666;
+  padding: 5px 0;
+  text-transform: uppercase;
+}
+
+.calendar-days {
+  display: grid;
+  grid-template-columns: repeat(7, 1fr);
+  gap: 2px;
+}
+
+.calendar-day {
+  aspect-ratio: 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 12px;
+  border-radius: 4px;
+  cursor: pointer;
+  background: #f8f9fa;
+  color: #666;
+  border: 1px solid transparent;
+  transition: all 0.2s ease;
+  position: relative;
+}
+
+.calendar-day:hover {
+  background: #e8f4f8;
+  border-color: #007bff;
+}
+
+.calendar-day.other-month {
+  color: #ccc;
+  background: #fafafa;
+}
+
+.calendar-day.today {
+  background: #007bff;
+  color: white;
+  font-weight: 600;
+  border-color: #0056cc;
+}
+
+.calendar-day.today:hover {
+  background: #0056cc;
+}
+
+.calendar-day.selected {
+  background: #28a745;
+  color: white;
+  font-weight: 600;
+  border-color: #1e7e34;
+}
+
+.calendar-day.selected:hover {
+  background: #1e7e34;
+}
+
+.calendar-day.has-notes {
+  font-weight: 600;
+  color: #007bff;
+}
+
+.calendar-day.has-notes::before {
+  content: '';
+  display: block;
+  width: 4px;
+  height: 4px;
+  background: #007bff;
+  border-radius: 50%;
+  position: absolute;
+  bottom: 2px;
+  left: 50%;
+  transform: translateX(-50%);
+}
+
+.main {
+  flex: 1;
+  min-width: 300px;
+}
+
+/* Адаптация для мобильных устройств */
+@media (max-width: 768px) {
+  .main-wrapper {
+    flex-direction: column;
+  }
+
+  .calendar-sidebar {
+    width: 100%;
+  }
+
+  .calendar-container {
+    max-width: 100%;
+  }
+
+  .main {
+    min-width: auto;
+  }
+
+  .container {
+    max-width: 900px;
+  }
+}