diff --git a/src/components/DatePicker.vue b/src/components/DatePicker.vue
index c25b368..e0857f1 100644
--- a/src/components/DatePicker.vue
+++ b/src/components/DatePicker.vue
@@ -11,10 +11,12 @@ const props = withDefaults(
     placeholder?: string;
     previewFormat?: string;
     disabled?: boolean;
+    tooltip?: string;
   }>(),
   {
     placeholder: "Pick a date",
     previewFormat: "YYYY-MM-DD",
+    tooltip: "Pick a date",
   },
 );
 
@@ -48,7 +50,7 @@ function openPickerModal() {
 </script>
 
 <template>
-  <ObsidianButton class="date-picker" :disabled="disabled" @click="openPickerModal">
+  <ObsidianButton class="date-picker" :disabled="disabled" :tooltip="tooltip" @click="openPickerModal">
     <ObsidianIcon name="calendar" /> <span>{{ formattedDate }}</span>
   </ObsidianButton>
 </template>
diff --git a/src/components/obsidian/ObsidianButton.vue b/src/components/obsidian/ObsidianButton.vue
index 3a52b46..aa914ce 100644
--- a/src/components/obsidian/ObsidianButton.vue
+++ b/src/components/obsidian/ObsidianButton.vue
@@ -4,11 +4,17 @@ defineProps<{
   cta?: boolean;
   warning?: boolean;
   type?: "button" | "submit" | "reset";
+  tooltip?: string;
 }>();
 </script>
 
 <template>
-  <button :class="{ 'mod-cta': cta, 'mod-warning': warning }" :disabled="disabled" :type="type ?? 'button'">
+  <button
+    :class="{ 'mod-cta': cta, 'mod-warning': warning }"
+    :disabled="disabled"
+    :type="type ?? 'button'"
+    :aria-label="tooltip"
+  >
     <slot />
   </button>
 </template>
diff --git a/src/components/obsidian/ObsidianNumberInput.vue b/src/components/obsidian/ObsidianNumberInput.vue
index 30fbfe4..242daf2 100644
--- a/src/components/obsidian/ObsidianNumberInput.vue
+++ b/src/components/obsidian/ObsidianNumberInput.vue
@@ -4,6 +4,7 @@ defineProps<{
   disabled?: boolean;
   min?: number;
   max?: number;
+  narrow?: boolean;
 }>();
 
 const model = defineModel<number>();
@@ -13,6 +14,7 @@ const model = defineModel<number>();
   <input
     v-model="model"
     type="number"
+    :class="{ 'narrow-input': narrow }"
     :placeholder="placeholder"
     :disabled="disabled"
     :min="min"
@@ -20,3 +22,9 @@ const model = defineModel<number>();
     spellcheck="false"
   />
 </template>
+
+<style scoped>
+.narrow-input {
+  width: 60px;
+}
+</style>
diff --git a/src/defaults.ts b/src/defaults.ts
index 5a40f2d..73cf90f 100644
--- a/src/defaults.ts
+++ b/src/defaults.ts
@@ -44,8 +44,9 @@ export const defaultJournalSettings: JournalSettings = {
     enabled: false,
     anchorDate: "",
     anchorIndex: 1,
+    allowBefore: false,
     type: "increment",
-    resetAfter: 0,
+    resetAfter: 2,
     secondary: false,
     secondaryAncorIndex: 1,
   },
diff --git a/src/journals/journal.ts b/src/journals/journal.ts
index e2af13a..d234028 100644
--- a/src/journals/journal.ts
+++ b/src/journals/journal.ts
@@ -71,7 +71,7 @@ export class Journal {
     return await this.#buildMetadata(interval);
   }
 
-  async next(metadata: JournalMetadata, existing = false): Promise<JournalMetadata | null> {
+  async next(metadata: JournalInterval, existing = false): Promise<JournalMetadata | null> {
     if (existing) {
       const nextExstingMetadata = plugin$.value.index.findNext(this.id, metadata);
       if (nextExstingMetadata) return nextExstingMetadata;
@@ -84,7 +84,7 @@ export class Journal {
     return await this.#buildMetadata(interval);
   }
 
-  async previous(metadata: JournalMetadata, existing = false): Promise<JournalMetadata | null> {
+  async previous(metadata: JournalInterval, existing = false): Promise<JournalMetadata | null> {
     if (existing) {
       const previousExstingMetadata = plugin$.value.index.findPrevious(this.id, metadata);
       if (previousExstingMetadata) return previousExstingMetadata;
@@ -198,6 +198,7 @@ export class Journal {
       id: this.id,
       start_date: interval.start_date,
       end_date: interval.start_date,
+      index: await this.#resolveIndex(interval),
     };
     return metadata;
   }
@@ -250,4 +251,49 @@ export class Journal {
 
     return true;
   }
+
+  async #resolveIndex(interval: JournalInterval): Promise<number | undefined> {
+    if (!this.#config.value.index.enabled) return undefined;
+    if (!this.#config.value.index.anchorDate || !this.#config.value.index.anchorIndex) return undefined;
+    const before = await this.previous(interval, true);
+    if (before && before.index) {
+      const repeats = this.#intervalResolver.countRepeats(before.end_date, interval.start_date);
+      let index = before.index + repeats;
+      if (this.#config.value.index.type === "reset_after") {
+        index %= this.#config.value.index.resetAfter;
+      }
+      return index;
+    }
+    const after = await this.next(interval, true);
+    if (after && after.index) {
+      const repeats = this.#intervalResolver.countRepeats(interval.end_date, after.start_date);
+      let index = after.index - repeats;
+      if (this.#config.value.index.type === "reset_after" && index < 0) {
+        index *= -1;
+      }
+      return index;
+    }
+    const anchor = date(this.#config.value.index.anchorDate);
+    if (!anchor.isValid()) return undefined;
+    if (
+      anchor.isAfter(interval.start_date) &&
+      this.#config.value.index.type === "increment" &&
+      !this.#config.value.index.allowBefore
+    )
+      return undefined;
+    if (anchor.isBefore(interval.start_date)) {
+      const repeats = this.#intervalResolver.countRepeats(this.#config.value.index.anchorDate, interval.start_date);
+      let index = this.#config.value.index.anchorIndex + repeats;
+      if (this.#config.value.index.type === "reset_after") {
+        index %= this.#config.value.index.resetAfter;
+      }
+      return index;
+    }
+    const repeats = this.#intervalResolver.countRepeats(interval.end_date, this.#config.value.index.anchorDate);
+    let index = this.#config.value.index.anchorIndex - repeats;
+    if (this.#config.value.index.type === "reset_after" && index < 0) {
+      index *= -1;
+    }
+    return index;
+  }
 }
diff --git a/src/journals/journals-index.ts b/src/journals/journals-index.ts
index 9d85128..de53c84 100644
--- a/src/journals/journals-index.ts
+++ b/src/journals/journals-index.ts
@@ -2,7 +2,7 @@ import { Component, type TAbstractFile, TFile, moment, type FrontMatterCache } f
 import { app$ } from "../stores/obsidian.store";
 import { computed, ref, type ComputedRef } from "vue";
 import IntervalTree from "@flatten-js/interval-tree";
-import type { JournalMetadata } from "../types/journal.types";
+import type { JournalInterval, JournalMetadata } from "../types/journal.types";
 import {
   FRONTMATTER_END_DATE_KEY,
   FRONTMATTER_ID_KEY,
@@ -38,13 +38,13 @@ export class JournalsIndex extends Component {
     return list.find((entry) => entry.id === journalId);
   }
 
-  findNext(journalId: string, metadata: JournalMetadata): JournalMetadata | null {
+  findNext(journalId: string, metadata: JournalInterval): JournalMetadata | null {
     const date = moment(metadata.end_date).add(1, "day").toDate().getTime();
     const list = this.#intervalTree.search([date, Infinity]);
     return list.find((entry) => entry.id === journalId);
   }
 
-  findPrevious(journalId: string, metadata: JournalMetadata): JournalMetadata | null {
+  findPrevious(journalId: string, metadata: JournalInterval): JournalMetadata | null {
     const date = moment(metadata.start_date).subtract(1, "day").toDate().getTime();
     const list = this.#intervalTree.search([0, date]);
     return list.findLast((entry) => entry.id === journalId);
diff --git a/src/settings/JournalSettingsEdit.vue b/src/settings/JournalSettingsEdit.vue
index 99909a2..c562d61 100644
--- a/src/settings/JournalSettingsEdit.vue
+++ b/src/settings/JournalSettingsEdit.vue
@@ -10,6 +10,7 @@ import ObsidianNumberInput from "../components/obsidian/ObsidianNumberInput.vue"
 import ObsidianIconButton from "../components/obsidian/ObsidianIconButton.vue";
 import ObsidianButton from "../components/obsidian/ObsidianButton.vue";
 import ObsidianDropdown from "../components/obsidian/ObsidianDropdown.vue";
+import ObsidianToggle from "../components/obsidian/ObsidianToggle.vue";
 import FolderInput from "../components/FolderInput.vue";
 import DateFormatPreview from "../components/DateFormatPreview.vue";
 import VariableReferenceHint from "../components/VariableReferenceHint.vue";
@@ -51,6 +52,14 @@ function deleteCommand(index: number): void {
   pluginSettings$.value.showReloadHint = true;
 }
 
+watch(
+  () => journal.value.start,
+  (value) => {
+    if (value) {
+      journal.value.index.anchorDate = value;
+    }
+  },
+);
 watch(
   () => journal.value.end.type,
   () => {
@@ -102,6 +111,43 @@ watch(
     </template>
   </ObsidianSetting>
 
+  <ObsidianSetting name="Index notes">
+    <template #description> Allows to assign numbers to notes (ex. Day 1, Day 2, etc.). </template>
+    <ObsidianToggle v-model="journal.index.enabled" />
+  </ObsidianSetting>
+
+  <template v-if="journal.index.enabled">
+    <ObsidianSetting name="Anchor date">
+      <template #description>
+        This date is used to connect some number to it for further calculations.<br />
+        Start date is used as anchor date if defined.
+      </template>
+      <div :aria-label="journal.start ? 'Start date is used' : ''">
+        <DatePicker v-model="journal.index.anchorDate" :disabled="!!journal.start" />
+      </div>
+    </ObsidianSetting>
+    <ObsidianSetting name="Start number">
+      <template #description> This number is used to start numbering notes at anchor date. </template>
+      <ObsidianNumberInput v-model="journal.index.anchorIndex" :min="1" />
+    </ObsidianSetting>
+
+    <ObsidianSetting name="Index change">
+      <template #description> Define how index number will change with time. </template>
+      <ObsidianDropdown v-model="journal.index.type">
+        <option value="increment">Constantly increasing</option>
+        <option value="reset_after">Resets after</option>
+      </ObsidianDropdown>
+      <template v-if="journal.index.type === 'reset_after'">
+        <ObsidianNumberInput v-model="journal.index.resetAfter" :min="2" narrow />
+        repeats
+      </template>
+    </ObsidianSetting>
+    <ObsidianSetting v-if="!journal.start && journal.index.type === 'increment'" name="Allow before">
+      <template #description> Enabled to index before anchor date. Might result in negative numbers. </template>
+      <ObsidianToggle v-model="journal.index.allowBefore" />
+    </ObsidianSetting>
+  </template>
+
   <ObsidianSetting name="Open note">
     <ObsidianDropdown v-model="journal.openMode">
       <option value="active">Replacing active note</option>
diff --git a/src/types/settings.types.ts b/src/types/settings.types.ts
index a580ab3..159fa07 100644
--- a/src/types/settings.types.ts
+++ b/src/types/settings.types.ts
@@ -98,7 +98,8 @@ export interface JournalSettings {
     enabled: boolean;
     anchorDate: string;
     anchorIndex: number;
-    type: "increment" | "year_reset" | "reset_after";
+    allowBefore: boolean;
+    type: "increment" | "reset_after";
     resetAfter: number;
     secondary: boolean;
     secondaryAncorIndex: number;