diff --git a/package-lock.json b/package-lock.json
index f835e031..1879df7a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9017,6 +9017,14 @@
         "lodash.difference": "^4.5.0"
       }
     },
+    "moment-timezone": {
+      "version": "0.5.33",
+      "resolved": "https://registry.npmjs.org/moment-timezone/-/moment-timezone-0.5.33.tgz",
+      "integrity": "sha512-PTc2vcT8K9J5/9rDEPe5czSIKgLoGsH8UNpA4qZTVw0Vd/Uz19geE9abbIOQKaAQFcnQ3v5YEXrbSc5BpshH+w==",
+      "requires": {
+        "moment": ">= 2.9.0"
+      }
+    },
     "move-concurrently": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/move-concurrently/-/move-concurrently-1.0.1.tgz",
diff --git a/package.json b/package.json
index 292c2fcf..1178ff70 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "js-cookie": "^2.2.1",
     "line-awesome": "^1.3.0",
     "moment": "^2.29.1",
+    "moment-timezone": "^0.5.33",
     "register-service-worker": "^1.7.2",
     "ua-parser-js": "^0.7.24",
     "vue": "^2.6.12",
diff --git a/pkg/exchangerates/euro_central_bank_datasource.go b/pkg/exchangerates/euro_central_bank_datasource.go
index 9f4b325d..9483d1a4 100644
--- a/pkg/exchangerates/euro_central_bank_datasource.go
+++ b/pkg/exchangerates/euro_central_bank_datasource.go
@@ -2,6 +2,7 @@ package exchangerates
 
 import (
 	"encoding/xml"
+	"time"
 
 	"github.com/mayswind/lab/pkg/core"
 	"github.com/mayswind/lab/pkg/errs"
@@ -14,6 +15,9 @@ const euroCentralBankExchangeRateReferenceUrl = "https://www.ecb.europa.eu/stats
 const euroCentralBankDataSource = "European Central Bank"
 const euroCentralBankBaseCurrency = "EUR"
 
+const euroCentralBankDataUpdateDateFormat = "2006-01-02 15"
+const euroCentralBankDataUpdateDateTimezone = "Etc/GMT-1" // UTC+01:00
+
 // EuroCentralBankDataSource defines the structure of exchange rates data source of euro central bank
 type EuroCentralBankDataSource struct {
 	ExchangeRatesDataSource
@@ -55,10 +59,23 @@ func (e *EuroCentralBankExchangeRateData) ToLatestExchangeRateResponse() *models
 		exchangeRates[i] = latestEuroCentralBankExchangeRate.ExchangeRates[i].ToLatestExchangeRate()
 	}
 
+	timezone, err := time.LoadLocation(euroCentralBankDataUpdateDateTimezone)
+
+	if err != nil {
+		return nil
+	}
+
+	updateDateTime := latestEuroCentralBankExchangeRate.Date + " 16" // The reference rates are usually updated around 16:00 CET on every working day
+	updateTime, err := time.ParseInLocation(euroCentralBankDataUpdateDateFormat, updateDateTime, timezone)
+
+	if err != nil {
+		return nil
+	}
+
 	latestExchangeRateResp := &models.LatestExchangeRateResponse{
 		DataSource:    euroCentralBankDataSource,
 		ReferenceUrl:  euroCentralBankExchangeRateReferenceUrl,
-		Date:          latestEuroCentralBankExchangeRate.Date,
+		UpdateTime:    updateTime.Unix(),
 		BaseCurrency:  euroCentralBankBaseCurrency,
 		ExchangeRates: exchangeRates,
 	}
diff --git a/pkg/models/exchange_rate.go b/pkg/models/exchange_rate.go
index 328b3359..28319fbd 100644
--- a/pkg/models/exchange_rate.go
+++ b/pkg/models/exchange_rate.go
@@ -4,7 +4,7 @@ package models
 type LatestExchangeRateResponse struct {
 	DataSource    string                `json:"dataSource"`
 	ReferenceUrl  string                `json:"referenceUrl"`
-	Date          string                `json:"date"`
+	UpdateTime    int64                 `json:"updateTime"`
 	BaseCurrency  string                `json:"baseCurrency"`
 	ExchangeRates []*LatestExchangeRate `json:"exchangeRates"`
 }
diff --git a/src/components/mobile/DateRangeSelectionSheet.vue b/src/components/mobile/DateRangeSelectionSheet.vue
index c7f4578a..0dd75448 100644
--- a/src/components/mobile/DateRangeSelectionSheet.vue
+++ b/src/components/mobile/DateRangeSelectionSheet.vue
@@ -52,7 +52,7 @@ export default {
     data() {
         const self = this;
         let minDate = self.$utilities.getTodayFirstUnixTime();
-        let maxDate = self.$utilities.getUnixTime(new Date());
+        let maxDate = self.$utilities.getCurrentUnixTime();
 
         if (self.minTime) {
             minDate = self.minTime;
@@ -70,12 +70,12 @@ export default {
     watch: {
         'currentMinDate': function (newValue) {
             if (!newValue) {
-                this.currentMinDate = this.$utilities.formatDate(new Date(), 'YYYY-MM-DDTHH:mm');
+                this.currentMinDate = this.$utilities.formatUnixTime(this.$utilities.getCurrentUnixTime(), 'YYYY-MM-DDTHH:mm');
             }
         },
         'currentMaxDate': function (newValue) {
             if (!newValue) {
-                this.currentMaxDate = this.$utilities.formatDate(new Date(), 'YYYY-MM-DDTHH:mm');
+                this.currentMaxDate = this.$utilities.formatUnixTime(this.$utilities.getCurrentUnixTime(), 'YYYY-MM-DDTHH:mm');
             }
         }
     },
diff --git a/src/lib/settings.js b/src/lib/settings.js
index b189bd08..0d086339 100644
--- a/src/lib/settings.js
+++ b/src/lib/settings.js
@@ -8,6 +8,7 @@ const serverSettingsCookieKey = 'lab_server_settings';
 
 const defaultSettings = {
     lang: 'en',
+    timeZone: '',
     debug: false,
     applicationLock: false,
     applicationLockWebAuthn: false,
@@ -128,6 +129,8 @@ export default {
     isProduction: () => process.env.NODE_ENV === 'production',
     getLanguage: () => getOriginalOption('lang'),
     setLanguage: value => setOption('lang', value),
+    getTimezone: () => getOption('timeZone'),
+    setTimezone: value => setOption('timeZone', value),
     isEnableDebug: () => getOption('debug'),
     setEnableDebug: value => setOption('debug', value),
     isEnableApplicationLock: () => getOption('applicationLock'),
diff --git a/src/lib/utils.js b/src/lib/utils.js
index abfdda06..b7c7e992 100644
--- a/src/lib/utils.js
+++ b/src/lib/utils.js
@@ -34,12 +34,20 @@ function isBoolean(val) {
     return typeof(val) === 'boolean';
 }
 
-function parseDateFromUnixTime(unixTime) {
-    return moment.unix(unixTime);
+function getTimezoneOffset(timezone) {
+    if (timezone) {
+        return moment().tz(timezone).format('Z');
+    } else {
+        return moment().format('Z');
+    }
 }
 
-function formatDate(date, format) {
-    return moment(date).format(format);
+function getCurrentUnixTime() {
+    return moment().unix();
+}
+
+function parseDateFromUnixTime(unixTime) {
+    return moment.unix(unixTime);
 }
 
 function formatUnixTime(unixTime, format) {
@@ -107,7 +115,7 @@ function getMinuteLastUnixTime(date) {
 }
 
 function getTodayFirstUnixTime() {
-    return moment({ hour: 0, minute: 0, second: 0, millisecond: 0 }).unix();
+    return moment().set({ hour: 0, minute: 0, second: 0, millisecond: 0 }).unix();
 }
 
 function getTodayLastUnixTime() {
@@ -562,8 +570,9 @@ export default {
     isString,
     isNumber,
     isBoolean,
+    getTimezoneOffset,
+    getCurrentUnixTime,
     parseDateFromUnixTime,
-    formatDate,
     formatUnixTime,
     getUnixTime,
     getYear,
diff --git a/src/locales/en.js b/src/locales/en.js
index 247a9c5f..41150fa1 100644
--- a/src/locales/en.js
+++ b/src/locales/en.js
@@ -680,6 +680,8 @@ export default {
     'Filter Transaction Categories': 'Filter Transaction Categories',
     'User Profile': 'User Profile',
     'Language': 'Language',
+    'Timezone': 'Timezone',
+    'System Default': 'System Default',
     'Auto Update Exchange Rates Data': 'Auto Update Exchange Rates Data',
     'Enable Thousands Separator': 'Enable Thousands Separator',
     'Currency Display Mode': 'Currency Display Mode',
diff --git a/src/locales/zh_Hans.js b/src/locales/zh_Hans.js
index eaaafb35..1a068867 100644
--- a/src/locales/zh_Hans.js
+++ b/src/locales/zh_Hans.js
@@ -680,6 +680,8 @@ export default {
     'Filter Transaction Categories': '过滤交易类型',
     'User Profile': '用户信息',
     'Language': '语言',
+    'Timezone': '时区',
+    'System Default': '系统默认',
     'Auto Update Exchange Rates Data': '自动更新汇率数据',
     'Enable Thousands Separator': '启用千位分隔符',
     'Currency Display Mode': '货币显示模式',
diff --git a/src/mobile-main.js b/src/mobile-main.js
index 0db26ec9..ecd0937e 100644
--- a/src/mobile-main.js
+++ b/src/mobile-main.js
@@ -6,7 +6,7 @@ import PincodeInput from 'vue-pincode-input';
 import VueMoment from 'vue-moment';
 import VueClipboard from 'vue-clipboard2';
 
-import moment from 'moment';
+import moment from 'moment-timezone';
 
 import Framework7 from 'framework7/framework7-lite.esm.js';
 import Framework7Dialog from 'framework7/components/dialog/dialog';
@@ -186,6 +186,7 @@ Vue.prototype.$logger = logger;
 Vue.prototype.$webauthn = webauthn;
 Vue.prototype.$settings = settings;
 Vue.prototype.$locale = {
+    defaultTimezoneOffset: utils.getTimezoneOffset(),
     getDefaultLanguage: getDefaultLanguage,
     getAllLanguages: getAllLanguages,
     getLanguage: getLanguage,
@@ -200,6 +201,31 @@ Vue.prototype.$locale = {
         document.querySelector('html').setAttribute('lang', locale);
         return locale;
     },
+    getTimezone: function () {
+        return settings.getTimezone();
+    },
+    setTimezone: function (timezone) {
+        if (timezone) {
+            settings.setTimezone(timezone);
+            moment.tz.setDefault(timezone);
+        } else {
+            settings.setTimezone('');
+            moment.tz.setDefault();
+        }
+    },
+    getAllTimezones: function () {
+        const allTimezoneNames = moment.tz.names();
+        const allTimezoneInfos = [];
+
+        for (let i = 0; i < allTimezoneNames.length; i++) {
+            allTimezoneInfos.push({
+                name: allTimezoneNames[i],
+                displayName: `(UTC${utils.getTimezoneOffset(allTimezoneNames[i])}) ${allTimezoneNames[i]}`
+            });
+        }
+
+        return allTimezoneInfos;
+    },
     getAllCurrencies: function () {
         const allCurrencyCodes = currency.all;
         const allCurrencies = [];
@@ -229,6 +255,13 @@ Vue.prototype.$locale = {
             logger.info(`No language is set, use browser default ${getDefaultLanguage()}`);
             this.setLanguage(getDefaultLanguage());
         }
+
+        if (settings.getTimezone()) {
+            logger.info(`Current timezone is ${settings.getTimezone()}`);
+            this.setTimezone(settings.getTimezone());
+        } else {
+            logger.info(`No timezone is set, use browser default ${utils.getTimezoneOffset()} (maybe ${moment.tz.guess(true)})`);
+        }
     }
 };
 
diff --git a/src/store/exchangeRates.js b/src/store/exchangeRates.js
index e72ca5b1..37583a8c 100644
--- a/src/store/exchangeRates.js
+++ b/src/store/exchangeRates.js
@@ -10,16 +10,16 @@ const exchangeRatesLocalStorageKey = 'lab_app_exchange_rates';
 
 export function getLatestExchangeRates(context, { silent, force }) {
     const currentExchangeRateData = context.state.latestExchangeRates;
-    const now = new Date();
+    const now = utils.getCurrentUnixTime();
 
     if (!force) {
         if (currentExchangeRateData && currentExchangeRateData.time && currentExchangeRateData.data &&
-            currentExchangeRateData.data.date === utils.formatDate(now, 'YYYY-MM-DD')) {
+            utils.formatUnixTime(currentExchangeRateData.data.updateTime, 'YYYY-MM-DD') === utils.formatUnixTime(now, 'YYYY-MM-DD')) {
             return currentExchangeRateData.data;
         }
 
         if (currentExchangeRateData && currentExchangeRateData.time && currentExchangeRateData.data &&
-            utils.formatUnixTime(currentExchangeRateData.time, 'YYYY-MM-DD HH') === utils.formatDate(now, 'YYYY-MM-DD HH')) {
+            utils.formatUnixTime(currentExchangeRateData.time, 'YYYY-MM-DD HH') === utils.formatUnixTime(now, 'YYYY-MM-DD HH')) {
             return currentExchangeRateData.data;
         }
     }
@@ -36,7 +36,7 @@ export function getLatestExchangeRates(context, { silent, force }) {
             }
 
             context.commit(STORE_LATEST_EXCHANGE_RATES, {
-                time: utils.getUnixTime(now),
+                time: now,
                 data: data.result
             });
 
@@ -55,9 +55,9 @@ export function getLatestExchangeRates(context, { silent, force }) {
     });
 }
 
-export function exchangeRatesLastUpdateDate(state) {
+export function exchangeRatesLastUpdateTime(state) {
     const exchangeRates = state.latestExchangeRates || {};
-    return exchangeRates && exchangeRates.data ? exchangeRates.data.date : null;
+    return exchangeRates && exchangeRates.data ? exchangeRates.data.updateTime : null;
 }
 
 export function getExchangedAmount(state) {
diff --git a/src/store/index.js b/src/store/index.js
index 70716a12..7cbb0e61 100644
--- a/src/store/index.js
+++ b/src/store/index.js
@@ -85,7 +85,7 @@ import {
 
 import {
     getLatestExchangeRates,
-    exchangeRatesLastUpdateDate,
+    exchangeRatesLastUpdateTime,
     getExchangedAmount,
     getExchangeRatesFromLocalStorage,
     setExchangeRatesToLocalStorage,
@@ -198,7 +198,7 @@ const stores = {
         currentUserFirstDayOfWeek,
 
         // exchange rates
-        exchangeRatesLastUpdateDate,
+        exchangeRatesLastUpdateTime,
         getExchangedAmount,
 
         // account
diff --git a/src/views/mobile/Settings.vue b/src/views/mobile/Settings.vue
index dfc77cad..522d6319 100644
--- a/src/views/mobile/Settings.vue
+++ b/src/views/mobile/Settings.vue
@@ -24,7 +24,7 @@
                     <f7-list-item
                         :key="currentLocale + '_lang'"
                         :title="$t('Language')"
-                        smart-select :smart-select-params="{ openIn: 'sheet', closeOnSelect: true, sheetCloseLinkText: $t('Done') }">
+                        smart-select :smart-select-params="{ openIn: 'sheet', closeOnSelect: true, sheetCloseLinkText: $t('Done'), scrollToSelectedItem: true }">
                         <select v-model="currentLocale">
                             <option v-for="(lang, locale) in allLanguages"
                                     :key="locale"
@@ -32,6 +32,17 @@
                         </select>
                     </f7-list-item>
 
+                    <f7-list-item
+                        :title="$t('Timezone')"
+                        smart-select :smart-select-params="{ openIn: 'popup', searchbar: true, searchbarPlaceholder: $t('Timezone'), searchbarDisableText: $t('Cancel'), closeOnSelect: true, popupCloseLinkText: $t('Done'), scrollToSelectedItem: true }">
+                        <select v-model="currentTimezone">
+                            <option value="">{{ `(UTC${defaultTimezoneOffset}) ${$t('System Default')}` }}</option>
+                            <option v-for="timezone in allTimezones"
+                                    :key="timezone.name"
+                                    :value="timezone.name">{{ timezone.displayName }}</option>
+                        </select>
+                    </f7-list-item>
+
                     <f7-list-item :title="$t('Application Lock')" :after="isEnableApplicationLock ? $t('Enabled') : $t('Disabled')" link="/app_lock"></f7-list-item>
 
                     <f7-list-item :title="$t('Exchange Rates Data')" :after="exchangeRatesLastUpdateDate" link="/exchange_rates"></f7-list-item>
@@ -104,6 +115,12 @@ export default {
         allLanguages() {
             return this.$locale.getAllLanguages();
         },
+        allTimezones() {
+            return this.$locale.getAllTimezones();
+        },
+        defaultTimezoneOffset() {
+            return this.$locale.defaultTimezoneOffset;
+        },
         currentLocale: {
             get: function () {
                 return this.$i18n.locale;
@@ -112,6 +129,14 @@ export default {
                 this.$locale.setLanguage(value);
             }
         },
+        currentTimezone: {
+            get: function () {
+                return this.$locale.getTimezone();
+            },
+            set: function (value) {
+                this.$locale.setTimezone(value);
+            }
+        },
         currentNickName() {
             return this.$store.getters.currentUserNickname || this.$t('User');
         },
@@ -119,8 +144,8 @@ export default {
             return this.$settings.isDataExportingEnabled();
         },
         exchangeRatesLastUpdateDate() {
-            const exchangeRatesLastUpdateDate = this.$store.getters.exchangeRatesLastUpdateDate;
-            return exchangeRatesLastUpdateDate ? this.$utilities.formatDate(exchangeRatesLastUpdateDate, this.$t('format.date.long')) : '';
+            const exchangeRatesLastUpdateTime = this.$store.getters.exchangeRatesLastUpdateTime;
+            return exchangeRatesLastUpdateTime ? this.$utilities.formatUnixTime(exchangeRatesLastUpdateTime, this.$t('format.date.long')) : '';
         },
         isAutoUpdateExchangeRatesData: {
             get: function () {
diff --git a/src/views/mobile/transactions/Edit.vue b/src/views/mobile/transactions/Edit.vue
index ffb8eec2..692ded41 100644
--- a/src/views/mobile/transactions/Edit.vue
+++ b/src/views/mobile/transactions/Edit.vue
@@ -250,7 +250,7 @@ export default {
     data() {
         const self = this;
         const query = self.$f7route.query;
-        const now = new Date();
+        const now = self.$utilities.getCurrentUnixTime();
 
         let defaultType = self.$constants.transaction.allTransactionTypes.Expense;
 
@@ -265,8 +265,8 @@ export default {
             editTransactionId: null,
             transaction: {
                 type: defaultType,
-                unixTime: self.$utilities.getUnixTime(now),
-                time: self.$utilities.formatDate(now, 'YYYY-MM-DDTHH:mm'),
+                unixTime: now,
+                time: self.$utilities.formatUnixTime(now, 'YYYY-MM-DDTHH:mm'),
                 expenseCategory: '',
                 incomeCategory: '',
                 transferCategory: '',
@@ -488,7 +488,7 @@ export default {
         },
         'transaction.time': function (newValue) {
             if (!newValue) {
-                newValue = this.$utilities.formatDate(new Date(), 'YYYY-MM-DDTHH:mm');
+                newValue = this.$utilities.formatUnixTime(this.$utilities.getCurrentUnixTime(), 'YYYY-MM-DDTHH:mm');
                 this.transaction.time = newValue;
             }