From 080ec1004eb5aeda9ee1dacc03a9d676a0144c5d Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:18:44 +0900
Subject: [PATCH 1/9] =?UTF-8?q?perf(frontend):=20=E4=BD=8E=E7=B2=BE?=
 =?UTF-8?q?=E5=BA=A6=E3=81=AA=E7=8F=BE=E5=9C=A8=E6=99=82=E5=88=BB=E3=82=92?=
 =?UTF-8?q?=E4=B8=80=E3=81=8B=E6=89=80=E3=81=A7=E7=AE=A1=E7=90=86=E3=81=99?=
 =?UTF-8?q?=E3=82=8B=E3=82=88=E3=81=86=E3=81=AB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 packages/frontend/src/components/MkPoll.vue   | 24 ++++----------
 .../frontend/src/components/global/MkTime.vue | 29 +++--------------
 .../src/composables/use-lowres-time.ts        | 32 +++++++++++++++++++
 .../frontend/src/widgets/WidgetCalendar.vue   | 17 ++++------
 4 files changed, 50 insertions(+), 52 deletions(-)
 create mode 100644 packages/frontend/src/composables/use-lowres-time.ts

diff --git a/packages/frontend/src/components/MkPoll.vue b/packages/frontend/src/components/MkPoll.vue
index 359ee08812..03df170a46 100644
--- a/packages/frontend/src/components/MkPoll.vue
+++ b/packages/frontend/src/components/MkPoll.vue
@@ -30,13 +30,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { computed, ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { host } from '@@/js/config.js';
-import { useInterval } from '@@/js/use-interval.js';
 import type { OpenOnRemoteOptions } from '@/utility/please-login.js';
 import { sum } from '@/utility/array.js';
 import { pleaseLogin } from '@/utility/please-login.js';
 import * as os from '@/os.js';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
+import { useLowresTime } from '@/composables/use-lowres-time.js';
 
 const props = defineProps<{
 	noteId: string;
@@ -48,7 +48,12 @@ const props = defineProps<{
 	author?: Misskey.entities.UserLite;
 }>();
 
-const remaining = ref(-1);
+const now = useLowresTime();
+
+const remaining = computed(() => {
+	if (props.expiresAt == null) return -1;
+	return Math.floor(Math.max(new Date(props.expiresAt).getTime() - now.value, 0) / 1000);
+});
 
 const total = computed(() => sum(props.choices.map(x => x.votes)));
 const closed = computed(() => remaining.value === 0);
@@ -71,21 +76,6 @@ const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 	url: `https://${host}/notes/${props.noteId}`,
 }));
 
-// 期限付きアンケート
-if (props.expiresAt) {
-	const tick = () => {
-		remaining.value = Math.floor(Math.max(new Date(props.expiresAt!).getTime() - Date.now(), 0) / 1000);
-		if (remaining.value === 0) {
-			showResult.value = true;
-		}
-	};
-
-	useInterval(tick, 3000, {
-		immediate: true,
-		afterMounted: false,
-	});
-}
-
 const vote = async (id) => {
 	if (props.readOnly || closed.value || isVoted.value) return;
 
diff --git a/packages/frontend/src/components/global/MkTime.vue b/packages/frontend/src/components/global/MkTime.vue
index f600f7eed2..23dc2269f1 100644
--- a/packages/frontend/src/components/global/MkTime.vue
+++ b/packages/frontend/src/components/global/MkTime.vue
@@ -14,9 +14,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import isChromatic from 'chromatic/isChromatic';
-import { onMounted, onUnmounted, ref, computed } from 'vue';
+import { computed } from 'vue';
 import { i18n } from '@/i18n.js';
 import { dateTimeFormat } from '@@/js/intl-const.js';
+import { useLowresTime } from '@/composables/use-lowres-time.js';
 
 const props = withDefaults(defineProps<{
 	time: Date | string | number | null;
@@ -46,8 +47,9 @@ const _time = props.time == null ? NaN : getDateSafe(props.time).getTime();
 const invalid = Number.isNaN(_time);
 const absolute = !invalid ? dateTimeFormat.format(_time) : i18n.ts._ago.invalid;
 
+const now = useLowresTime();
+
 // eslint-disable-next-line vue/no-setup-props-reactivity-loss
-const now = ref(props.origin?.getTime() ?? Date.now());
 const ago = computed(() => (now.value - _time) / 1000/*ms*/);
 
 const relative = computed<string>(() => {
@@ -72,29 +74,6 @@ const relative = computed<string>(() => {
 		i18n.tsx._timeIn.seconds({ n: (~~(-ago.value % 60)).toString() })
 	);
 });
-
-let tickId: number;
-let currentInterval: number;
-
-function tick() {
-	now.value = Date.now();
-	const nextInterval = ago.value < 60 ? 10000 : ago.value < 3600 ? 60000 : 180000;
-
-	if (currentInterval !== nextInterval) {
-		if (tickId) window.clearInterval(tickId);
-		currentInterval = nextInterval;
-		tickId = window.setInterval(tick, nextInterval);
-	}
-}
-
-if (!invalid && props.origin === null && (props.mode === 'relative' || props.mode === 'detail')) {
-	onMounted(() => {
-		tick();
-	});
-	onUnmounted(() => {
-		if (tickId) window.clearInterval(tickId);
-	});
-}
 </script>
 
 <style lang="scss" module>
diff --git a/packages/frontend/src/composables/use-lowres-time.ts b/packages/frontend/src/composables/use-lowres-time.ts
new file mode 100644
index 0000000000..a8c5fcf2ea
--- /dev/null
+++ b/packages/frontend/src/composables/use-lowres-time.ts
@@ -0,0 +1,32 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { ref, readonly, computed } from 'vue';
+
+const time = ref(Date.now());
+
+/**
+ * 精度が求められないが定期的に更新しないといけない時計で使用（10秒に一度更新）。
+ * tickを各コンポーネントで行うのではなく、ここで一括して行うことでパフォーマンスを改善する。
+ *
+ * ※ マウント前の時刻を返す可能性があるため、通常は`useLowresTime`を使用する
+*/
+export const lowresTime = readonly(time);
+
+/**
+ * 精度が求められないが定期的に更新しないといけない時計で使用（10秒に一度更新）。
+ * tickを各コンポーネントで行うのではなく、ここで一括して行うことでパフォーマンスを改善する。
+ *
+ * 必ず現在時刻以降を返すことを保証するコンポーサブル
+ */
+export function useLowresTime() {
+	// lowresTime自体はマウント前の時刻を返す可能性があるため、必ず現在時刻以降を返すことを保証する
+	const now = Date.now();
+	return computed(() => Math.max(time.value, now));
+}
+
+setInterval(() => {
+	time.value = Date.now();
+}, 10000);
diff --git a/packages/frontend/src/widgets/WidgetCalendar.vue b/packages/frontend/src/widgets/WidgetCalendar.vue
index 12c0a66c5c..5ce06287a1 100644
--- a/packages/frontend/src/widgets/WidgetCalendar.vue
+++ b/packages/frontend/src/widgets/WidgetCalendar.vue
@@ -38,12 +38,12 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { ref } from 'vue';
+import { ref, watch } from 'vue';
 import { useWidgetPropsManager } from './widget.js';
 import type { WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import type { FormWithDefault, GetFormResultType } from '@/utility/form.js';
 import { i18n } from '@/i18n.js';
-import { useInterval } from '@@/js/use-interval.js';
+import { useLowresTime } from '@/composables/use-lowres-time.js';
 
 const name = 'calendar';
 
@@ -65,6 +65,7 @@ const { widgetProps, configure } = useWidgetPropsManager(name,
 	emit,
 );
 
+const fNow = useLowresTime();
 const year = ref(0);
 const month = ref(0);
 const day = ref(0);
@@ -73,8 +74,9 @@ const yearP = ref(0);
 const monthP = ref(0);
 const dayP = ref(0);
 const isHoliday = ref(false);
-const tick = () => {
-	const now = new Date();
+
+watch(fNow, (to) => {
+	const now = new Date(to);
 	const nd = now.getDate();
 	const nm = now.getMonth();
 	const ny = now.getFullYear();
@@ -104,12 +106,7 @@ const tick = () => {
 	yearP.value = yearNumer / yearDenom * 100;
 
 	isHoliday.value = now.getDay() === 0 || now.getDay() === 6;
-};
-
-useInterval(tick, 1000, {
-	immediate: true,
-	afterMounted: false,
-});
+}, { immediate: true });
 
 defineExpose<WidgetComponentExpose>({
 	name,

From cdeddab90520d20dcf2203e1fb8fe53bce7e92fa Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:21:26 +0900
Subject: [PATCH 2/9] lint

---
 packages/frontend/src/composables/use-lowres-time.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/frontend/src/composables/use-lowres-time.ts b/packages/frontend/src/composables/use-lowres-time.ts
index a8c5fcf2ea..f7e3794afe 100644
--- a/packages/frontend/src/composables/use-lowres-time.ts
+++ b/packages/frontend/src/composables/use-lowres-time.ts
@@ -27,6 +27,6 @@ export function useLowresTime() {
 	return computed(() => Math.max(time.value, now));
 }
 
-setInterval(() => {
+window.setInterval(() => {
 	time.value = Date.now();
 }, 10000);

From 35ec4ae7e74ee811cbdebb943b9d56476b9d0f2b Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:32:45 +0900
Subject: [PATCH 3/9] fix

---
 packages/frontend/src/components/MkPoll.vue        | 6 ++++--
 packages/frontend/src/components/global/MkTime.vue | 5 +++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/packages/frontend/src/components/MkPoll.vue b/packages/frontend/src/components/MkPoll.vue
index 03df170a46..01ffc32cba 100644
--- a/packages/frontend/src/components/MkPoll.vue
+++ b/packages/frontend/src/components/MkPoll.vue
@@ -50,9 +50,11 @@ const props = defineProps<{
 
 const now = useLowresTime();
 
+const expiresAtTime = computed(() => props.expiresAt ? new Date(props.expiresAt).getTime() : null);
+
 const remaining = computed(() => {
-	if (props.expiresAt == null) return -1;
-	return Math.floor(Math.max(new Date(props.expiresAt).getTime() - now.value, 0) / 1000);
+	if (expiresAtTime.value == null) return -1;
+	return Math.floor(Math.max(expiresAtTime.value - now.value, 0) / 1000);
 });
 
 const total = computed(() => sum(props.choices.map(x => x.votes)));
diff --git a/packages/frontend/src/components/global/MkTime.vue b/packages/frontend/src/components/global/MkTime.vue
index 23dc2269f1..275d60b22c 100644
--- a/packages/frontend/src/components/global/MkTime.vue
+++ b/packages/frontend/src/components/global/MkTime.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import isChromatic from 'chromatic/isChromatic';
-import { computed } from 'vue';
+import { ref, computed, watch } from 'vue';
 import { i18n } from '@/i18n.js';
 import { dateTimeFormat } from '@@/js/intl-const.js';
 import { useLowresTime } from '@/composables/use-lowres-time.js';
@@ -47,7 +47,8 @@ const _time = props.time == null ? NaN : getDateSafe(props.time).getTime();
 const invalid = Number.isNaN(_time);
 const absolute = !invalid ? dateTimeFormat.format(_time) : i18n.ts._ago.invalid;
 
-const now = useLowresTime();
+const actualNow = useLowresTime();
+const now = computed(() => (props.origin ? props.origin.getTime() : actualNow.value));
 
 // eslint-disable-next-line vue/no-setup-props-reactivity-loss
 const ago = computed(() => (now.value - _time) / 1000/*ms*/);

From 0cab23e717432ea6e6adf7cc870d6f264e807971 Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:32:56 +0900
Subject: [PATCH 4/9] remove unused imports

---
 packages/frontend/src/components/global/MkTime.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/frontend/src/components/global/MkTime.vue b/packages/frontend/src/components/global/MkTime.vue
index 275d60b22c..88cccb99a2 100644
--- a/packages/frontend/src/components/global/MkTime.vue
+++ b/packages/frontend/src/components/global/MkTime.vue
@@ -14,7 +14,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <script lang="ts" setup>
 import isChromatic from 'chromatic/isChromatic';
-import { ref, computed, watch } from 'vue';
+import { computed } from 'vue';
 import { i18n } from '@/i18n.js';
 import { dateTimeFormat } from '@@/js/intl-const.js';
 import { useLowresTime } from '@/composables/use-lowres-time.js';

From 9bdaeb111bfb959b0ec0f63f3f8c0bde49be42fa Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:37:23 +0900
Subject: [PATCH 5/9] fix

---
 packages/frontend/src/components/MkPoll.vue | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/frontend/src/components/MkPoll.vue b/packages/frontend/src/components/MkPoll.vue
index 01ffc32cba..76c65397ae 100644
--- a/packages/frontend/src/components/MkPoll.vue
+++ b/packages/frontend/src/components/MkPoll.vue
@@ -27,7 +27,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 </template>
 
 <script lang="ts" setup>
-import { computed, ref } from 'vue';
+import { computed, ref, watch } from 'vue';
 import * as Misskey from 'misskey-js';
 import { host } from '@@/js/config.js';
 import type { OpenOnRemoteOptions } from '@/utility/please-login.js';
@@ -57,6 +57,13 @@ const remaining = computed(() => {
 	return Math.floor(Math.max(expiresAtTime.value - now.value, 0) / 1000);
 });
 
+const remainingWatchStop = watch(remaining, (to) => {
+	if (to <= 0) {
+		showResult.value = true;
+		remainingWatchStop();
+	}
+}, { immediate: true });
+
 const total = computed(() => sum(props.choices.map(x => x.votes)));
 const closed = computed(() => remaining.value === 0);
 const isVoted = computed(() => !props.multiple && props.choices.some(c => c.isVoted));
@@ -78,7 +85,7 @@ const pleaseLoginContext = computed<OpenOnRemoteOptions>(() => ({
 	url: `https://${host}/notes/${props.noteId}`,
 }));
 
-const vote = async (id) => {
+const vote = async (id: number) => {
 	if (props.readOnly || closed.value || isVoted.value) return;
 
 	pleaseLogin({ openOnRemote: pleaseLoginContext.value });

From ddc3f46d9b52ea9d7e3710a52a645af334027c44 Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:53:10 +0900
Subject: [PATCH 6/9] Update Changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1be9ba1f9..82c6536926 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -49,6 +49,7 @@
 - Enhance: 依存ソフトウェアの更新
 - Enhance: ノートを非表示にする相対期間を1ヶ月単位で自由に指定できるように
 - Enhance: メールアドレス確認画面のUIを改善
+- Enhance: 時刻計算ための基準値を一か所で管理するようにし、パフォーマンスを向上
 - Fix: 投稿フォームでファイルのアップロードが中止または失敗した際のハンドリングを修正
 - Fix: 一部の設定検索結果が存在しないパスになる問題を修正  
   (Cherry-picked from https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1171)

From 475c78c1d51e3ad7f99e6988c82802db376ced4e Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 30 Aug 2025 10:53:21 +0900
Subject: [PATCH 7/9] [ci skip] typo

---
 CHANGELOG.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 82c6536926..c08a967e53 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -49,7 +49,7 @@
 - Enhance: 依存ソフトウェアの更新
 - Enhance: ノートを非表示にする相対期間を1ヶ月単位で自由に指定できるように
 - Enhance: メールアドレス確認画面のUIを改善
-- Enhance: 時刻計算ための基準値を一か所で管理するようにし、パフォーマンスを向上
+- Enhance: 時刻計算のための基準値を一か所で管理するようにし、パフォーマンスを向上
 - Fix: 投稿フォームでファイルのアップロードが中止または失敗した際のハンドリングを修正
 - Fix: 一部の設定検索結果が存在しないパスになる問題を修正  
   (Cherry-picked from https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1171)

From 373b08d5e8e788c065efa251e0929aaf763dcd67 Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 6 Sep 2025 14:09:10 +0900
Subject: [PATCH 8/9] =?UTF-8?q?enhance:=20=E3=82=AB=E3=83=AC=E3=83=B3?=
 =?UTF-8?q?=E3=83=80=E3=83=BC=E3=82=A6=E3=82=A3=E3=82=B8=E3=82=A7=E3=83=83?=
 =?UTF-8?q?=E3=83=88=E3=81=AE=E6=97=A5=E4=BB=98=E5=A4=89=E6=9B=B4=E3=81=AF?=
 =?UTF-8?q?=E6=99=82=E9=96=93=E9=80=9A=E3=82=8A=E3=81=AB=E8=A1=8C=E3=81=86?=
 =?UTF-8?q?=E3=82=88=E3=81=86=E3=81=AB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/composables/use-lowres-time.ts        |  4 ++-
 .../frontend/src/widgets/WidgetCalendar.vue   | 33 +++++++++++++++++--
 2 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/packages/frontend/src/composables/use-lowres-time.ts b/packages/frontend/src/composables/use-lowres-time.ts
index f7e3794afe..3c5b561f51 100644
--- a/packages/frontend/src/composables/use-lowres-time.ts
+++ b/packages/frontend/src/composables/use-lowres-time.ts
@@ -7,6 +7,8 @@ import { ref, readonly, computed } from 'vue';
 
 const time = ref(Date.now());
 
+export const TIME_UPDATE_INTERVAL = 10000; // 10秒
+
 /**
  * 精度が求められないが定期的に更新しないといけない時計で使用（10秒に一度更新）。
  * tickを各コンポーネントで行うのではなく、ここで一括して行うことでパフォーマンスを改善する。
@@ -29,4 +31,4 @@ export function useLowresTime() {
 
 window.setInterval(() => {
 	time.value = Date.now();
-}, 10000);
+}, TIME_UPDATE_INTERVAL);
diff --git a/packages/frontend/src/widgets/WidgetCalendar.vue b/packages/frontend/src/widgets/WidgetCalendar.vue
index 5ce06287a1..6bf182450e 100644
--- a/packages/frontend/src/widgets/WidgetCalendar.vue
+++ b/packages/frontend/src/widgets/WidgetCalendar.vue
@@ -43,7 +43,7 @@ import { useWidgetPropsManager } from './widget.js';
 import type { WidgetComponentEmits, WidgetComponentExpose, WidgetComponentProps } from './widget.js';
 import type { FormWithDefault, GetFormResultType } from '@/utility/form.js';
 import { i18n } from '@/i18n.js';
-import { useLowresTime } from '@/composables/use-lowres-time.js';
+import { useLowresTime, TIME_UPDATE_INTERVAL } from '@/composables/use-lowres-time.js';
 
 const name = 'calendar';
 
@@ -75,8 +75,13 @@ const monthP = ref(0);
 const dayP = ref(0);
 const isHoliday = ref(false);
 
-watch(fNow, (to) => {
-	const now = new Date(to);
+const nextDay = new Date();
+nextDay.setHours(24, 0, 0, 0);
+let nextDayMidnightTime = nextDay.getTime();
+let nextDayTimer: number | null = null;
+
+function update(time: number) {
+	const now = new Date(time);
 	const nd = now.getDate();
 	const nm = now.getMonth();
 	const ny = now.getFullYear();
@@ -106,8 +111,30 @@ watch(fNow, (to) => {
 	yearP.value = yearNumer / yearDenom * 100;
 
 	isHoliday.value = now.getDay() === 0 || now.getDay() === 6;
+}
+
+watch(fNow, (to) => {
+	update(to);
+
+	// 次回更新までに日付が変わる場合、日付が変わった直後に強制的に更新するタイマーをセットする
+	if (nextDayMidnightTime - to <= TIME_UPDATE_INTERVAL) {
+		if (nextDayTimer != null) {
+			clearTimeout(nextDayTimer);
+			nextDayTimer = null;
+		}
+
+		nextDayTimer = window.setTimeout(() => {
+			update(nextDayMidnightTime);
+			nextDayTimer = null;
+		}, nextDayMidnightTime - to);
+	}
 }, { immediate: true });
 
+watch(day, () => {
+	nextDay.setHours(24, 0, 0, 0);
+	nextDayMidnightTime = nextDay.getTime();
+});
+
 defineExpose<WidgetComponentExpose>({
 	name,
 	configure,

From 8fb6824c1dcb889f155faf3853c081ed452603f2 Mon Sep 17 00:00:00 2001
From: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>
Date: Sat, 6 Sep 2025 14:50:30 +0900
Subject: [PATCH 9/9] [ci skip] fix

---
 packages/frontend/src/widgets/WidgetCalendar.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/frontend/src/widgets/WidgetCalendar.vue b/packages/frontend/src/widgets/WidgetCalendar.vue
index 6bf182450e..f2321ca9fa 100644
--- a/packages/frontend/src/widgets/WidgetCalendar.vue
+++ b/packages/frontend/src/widgets/WidgetCalendar.vue
@@ -119,7 +119,7 @@ watch(fNow, (to) => {
 	// 次回更新までに日付が変わる場合、日付が変わった直後に強制的に更新するタイマーをセットする
 	if (nextDayMidnightTime - to <= TIME_UPDATE_INTERVAL) {
 		if (nextDayTimer != null) {
-			clearTimeout(nextDayTimer);
+			window.clearTimeout(nextDayTimer);
 			nextDayTimer = null;
 		}