diff --git a/app/Casts/SeparateTimezoneCaster.php b/app/Casts/SeparateTimezoneCaster.php
new file mode 100644
index 0000000000..ef12471230
--- /dev/null
+++ b/app/Casts/SeparateTimezoneCaster.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace FireflyIII\Casts;
+
+use Carbon\Carbon;
+use Carbon\CarbonImmutable;
+use Illuminate\Contracts\Database\Eloquent\CastsAttributes;
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * Class SeparateTimezoneCaster
+ *
+ * Checks if the object has a separate _tz value. If it does, it will use that timezone to parse the date.
+ * If it is NULL, it will use the system's timezone.
+ *
+ * At some point a user's database consists entirely of UTC dates, and we won't need this anymore. However,
+ * the completeness of this migration is not yet guaranteed.
+ */
+class SeparateTimezoneCaster implements CastsAttributes
+{
+    /**
+     * Cast the given value.
+     *
+     * @param array<string, mixed> $attributes
+     */
+    public function get(Model $model, string $key, mixed $value, array $attributes): ?Carbon
+    {
+        if('' === $value || null === $value) {
+            return null;
+        }
+        $timeZone = $attributes[sprintf('%s_tz', $key)] ?? config('app.timezone');
+        return Carbon::parse($value, $timeZone)->setTimezone(config('app.timezone'));
+    }
+
+    /**
+     * Prepare the given value for storage.
+     *
+     * @param array<string, mixed> $attributes
+     */
+    public function set(Model $model, string $key, mixed $value, array $attributes): mixed
+    {
+        return $value;
+    }
+}
diff --git a/app/Console/Commands/Integrity/AddTimezonesToDates.php b/app/Console/Commands/Integrity/AddTimezonesToDates.php
index 286d577fcc..8355cc9028 100644
--- a/app/Console/Commands/Integrity/AddTimezonesToDates.php
+++ b/app/Console/Commands/Integrity/AddTimezonesToDates.php
@@ -58,26 +58,27 @@ class AddTimezonesToDates extends Command
      */
     protected $description = 'Make sure all dates have a timezone.';
 
+    public static array $models =  [
+        AccountBalance::class       => ['date'], // done
+        AvailableBudget::class      => ['start_date', 'end_date'], // done
+        Bill::class                 => ['date', 'end_date', 'extension_date'], // done
+        BudgetLimit::class          => ['start_date', 'end_date'], // done
+        CurrencyExchangeRate::class => ['date'], // done
+        InvitedUser::class          => ['expires'],
+        PiggyBankEvent::class       => ['date'],
+        PiggyBankRepetition::class  => ['startdate', 'targetdate'],
+        PiggyBank::class            => ['startdate', 'targetdate'], // done
+        Recurrence::class           => ['first_date', 'repeat_until', 'latest_date'],
+        Tag::class                  => ['date'],
+        TransactionJournal::class   => ['date'],
+    ];
+
     /**
      * Execute the console command.
      */
     public function handle(): void
     {
-        $models = [
-            AccountBalance::class       => ['date'], // done
-            AvailableBudget::class      => ['start_date', 'end_date'], // done
-            Bill::class                 => ['date', 'end_date', 'extension_date'], // done
-            BudgetLimit::class          => ['start_date', 'end_date'], // done
-            CurrencyExchangeRate::class => ['date'], // done
-            InvitedUser::class          => ['expires'],
-            PiggyBankEvent::class       => ['date'],
-            PiggyBankRepetition::class  => ['startdate', 'targetdate'],
-            PiggyBank::class            => ['startdate', 'targetdate'], // done
-            Recurrence::class           => ['first_date', 'repeat_until', 'latest_date'],
-            Tag::class                  => ['date'],
-            TransactionJournal::class   => ['date'],
-        ];
-        foreach ($models as $model => $fields) {
+        foreach (self::$models as $model => $fields) {
             $this->addTimezoneToModel($model, $fields);
         }
     }
diff --git a/app/Console/Commands/Integrity/ConvertDatesToUTC.php b/app/Console/Commands/Integrity/ConvertDatesToUTC.php
new file mode 100644
index 0000000000..9647976aa1
--- /dev/null
+++ b/app/Console/Commands/Integrity/ConvertDatesToUTC.php
@@ -0,0 +1,102 @@
+<?php
+/*
+ * ConvertDatesToUTC.php
+ * Copyright (c) 2024 james@firefly-iii.org.
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see https://www.gnu.org/licenses/.
+ */
+
+namespace FireflyIII\Console\Commands\Integrity;
+
+use Carbon\Carbon;
+use FireflyIII\Console\Commands\ShowsFriendlyMessages;
+use Illuminate\Console\Command;
+use Illuminate\Database\QueryException;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Log;
+
+class ConvertDatesToUTC extends Command
+{
+    use ShowsFriendlyMessages;
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'firefly-iii:convert-dates-to-utc';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Convert stored dates to UTC.';
+
+    /**
+     * Execute the console command.
+     */
+    public function handle(): int
+    {
+        /**
+         * @var string $model
+         * @var array  $fields
+         */
+        foreach (AddTimezonesToDates::$models as $model => $fields) {
+            $this->ConvertModeltoUTC($model, $fields);
+        }
+
+        return Command::SUCCESS;
+    }
+
+    private function ConvertModeltoUTC(string $model, array $fields): void
+    {
+        /** @var string $field */
+        foreach ($fields as $field) {
+            $this->convertFieldtoUTC($model, $field);
+        }
+    }
+
+    private function convertFieldtoUTC(string $model, string $field): void {
+        $this->info(sprintf('Converting %s.%s to UTC', $model, $field));
+        $shortModel    = str_replace('FireflyIII\Models\\', '', $model);
+        $timezoneField = sprintf('%s_tz', $field);
+        $items = new Collection();
+        $timeZone = config('app.timezone');
+
+        try {
+            $items = $model::where($timezoneField, $timeZone)->get();
+        } catch (QueryException $e) {
+            $this->friendlyError(sprintf('Cannot find timezone information to field "%s" of model "%s". Field does not exist.', $field, $shortModel));
+            Log::error($e->getMessage());
+        }
+        if (0 === $items->count()) {
+            $this->friendlyPositive(sprintf('All timezone information is UTC in field "%s" of model "%s".', $field, $shortModel));
+
+            return;
+        }
+        $this->friendlyInfo(sprintf('Converting field "%s" of model "%s" to UTC.', $field, $shortModel));
+        $items->each(
+            function ($item) use ($field, $timezoneField, $timeZone) {
+                /** @var Carbon $date */
+                $date = Carbon::parse($item->$field, $item->$timezoneField);
+                $date->setTimezone('UTC');
+                $item->$field = $date->format('Y-m-d H:i:s');
+                $item->$timezoneField = 'UTC';
+                $item->save();
+            }
+        );
+    }
+}
diff --git a/app/Models/AccountBalance.php b/app/Models/AccountBalance.php
index baa996167d..5f09ff00fa 100644
--- a/app/Models/AccountBalance.php
+++ b/app/Models/AccountBalance.php
@@ -4,6 +4,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
@@ -16,6 +17,13 @@ class AccountBalance extends Model
     use HasFactory;
     protected $fillable = ['account_id', 'title', 'transaction_currency_id', 'balance', 'date', 'date_tz'];
 
+    protected function casts(): array
+    {
+        return [
+            'date' => SeparateTimezoneCaster::class,
+        ];
+    }
+
     public function account(): BelongsTo
     {
         return $this->belongsTo(Account::class);
diff --git a/app/Models/Bill.php b/app/Models/Bill.php
index 655fc729d5..5a9a1516b7 100644
--- a/app/Models/Bill.php
+++ b/app/Models/Bill.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -49,9 +50,9 @@ class Bill extends Model
             'created_at'      => 'datetime',
             'updated_at'      => 'datetime',
             'deleted_at'      => 'datetime',
-            'date'            => 'date',
-            'end_date'        => 'date',
-            'extension_date'  => 'date',
+            'date'          => SeparateTimezoneCaster::class,
+            'end_date'        => SeparateTimezoneCaster::class,
+            'extension_date'  => SeparateTimezoneCaster::class,
             'skip'            => 'int',
             'automatch'       => 'boolean',
             'active'          => 'boolean',
diff --git a/app/Models/BudgetLimit.php b/app/Models/BudgetLimit.php
index 1fafd7f2e6..faabad9f54 100644
--- a/app/Models/BudgetLimit.php
+++ b/app/Models/BudgetLimit.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Events\Model\BudgetLimit\Created;
 use FireflyIII\Events\Model\BudgetLimit\Deleted;
 use FireflyIII\Events\Model\BudgetLimit\Updated;
@@ -43,8 +44,8 @@ class BudgetLimit extends Model
                         = [
             'created_at'  => 'datetime',
             'updated_at'  => 'datetime',
-            'start_date'  => 'date',
-            'end_date'    => 'date',
+            'start_date'  => SeparateTimezoneCaster::class,
+            'end_date'    => SeparateTimezoneCaster::class,
             'auto_budget' => 'boolean',
         ];
     protected $dispatchesEvents
diff --git a/app/Models/CurrencyExchangeRate.php b/app/Models/CurrencyExchangeRate.php
index 3cb848bdf0..dd9063f803 100644
--- a/app/Models/CurrencyExchangeRate.php
+++ b/app/Models/CurrencyExchangeRate.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -47,7 +48,7 @@ class CurrencyExchangeRate extends Model
             'user_id'          => 'int',
             'from_currency_id' => 'int',
             'to_currency_id'   => 'int',
-            'date'             => 'datetime',
+            'date'             => SeparateTimezoneCaster::class,
         ];
     protected $fillable = ['user_id', 'from_currency_id', 'to_currency_id', 'date', 'date_tz', 'rate'];
 
diff --git a/app/Models/InvitedUser.php b/app/Models/InvitedUser.php
index 3360413df0..f0634c27db 100644
--- a/app/Models/InvitedUser.php
+++ b/app/Models/InvitedUser.php
@@ -24,6 +24,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -41,7 +42,7 @@ class InvitedUser extends Model
 
     protected $casts
                         = [
-            'expires'  => 'datetime',
+            'expires'  => SeparateTimezoneCaster::class,
             'redeemed' => 'boolean',
         ];
     protected $fillable = ['user_id', 'email', 'invite_code', 'expires', 'expires_tz', 'redeemed'];
diff --git a/app/Models/PiggyBankEvent.php b/app/Models/PiggyBankEvent.php
index 9dc798ab96..035e47dc49 100644
--- a/app/Models/PiggyBankEvent.php
+++ b/app/Models/PiggyBankEvent.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Model;
@@ -39,7 +40,7 @@ class PiggyBankEvent extends Model
                         = [
             'created_at' => 'datetime',
             'updated_at' => 'datetime',
-            'date'       => 'date',
+            'date'       => SeparateTimezoneCaster::class,
         ];
 
     protected $fillable = ['piggy_bank_id', 'transaction_journal_id', 'date', 'date_tz', 'amount'];
diff --git a/app/Models/PiggyBankRepetition.php b/app/Models/PiggyBankRepetition.php
index 5c20d75baa..826e3bd627 100644
--- a/app/Models/PiggyBankRepetition.php
+++ b/app/Models/PiggyBankRepetition.php
@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace FireflyIII\Models;
 
 use Carbon\Carbon;
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
 use Illuminate\Database\Eloquent\Casts\Attribute;
@@ -41,8 +42,8 @@ class PiggyBankRepetition extends Model
                         = [
             'created_at' => 'datetime',
             'updated_at' => 'datetime',
-            'startdate'  => 'date',
-            'targetdate' => 'date',
+            'startdate'  => SeparateTimezoneCaster::class,
+            'targetdate' => SeparateTimezoneCaster::class,
         ];
 
     protected $fillable = ['piggy_bank_id', 'startdate', 'startdate_tz', 'targetdate', 'targetdate_tz', 'currentamount'];
diff --git a/app/Models/Recurrence.php b/app/Models/Recurrence.php
index 61b96fe68e..4c9e67f152 100644
--- a/app/Models/Recurrence.php
+++ b/app/Models/Recurrence.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -51,9 +52,9 @@ class Recurrence extends Model
             'title'        => 'string',
             'id'           => 'int',
             'description'  => 'string',
-            'first_date'   => 'date',
-            'repeat_until' => 'date',
-            'latest_date'  => 'date',
+            'first_date'   => SeparateTimezoneCaster::class,
+            'repeat_until' => SeparateTimezoneCaster::class,
+            'latest_date'  => SeparateTimezoneCaster::class,
             'repetitions'  => 'int',
             'active'       => 'bool',
             'apply_rules'  => 'bool',
diff --git a/app/Models/Tag.php b/app/Models/Tag.php
index f55b989e0b..fa559ac459 100644
--- a/app/Models/Tag.php
+++ b/app/Models/Tag.php
@@ -23,6 +23,7 @@ declare(strict_types=1);
 
 namespace FireflyIII\Models;
 
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -47,7 +48,7 @@ class Tag extends Model
             'created_at' => 'datetime',
             'updated_at' => 'datetime',
             'deleted_at' => 'datetime',
-            'date'       => 'date',
+            'date'       => SeparateTimezoneCaster::class,
             'zoomLevel'  => 'int',
             'latitude'   => 'float',
             'longitude'  => 'float',
diff --git a/app/Models/TransactionJournal.php b/app/Models/TransactionJournal.php
index 9fe911a8e7..87779dd2b4 100644
--- a/app/Models/TransactionJournal.php
+++ b/app/Models/TransactionJournal.php
@@ -24,6 +24,7 @@ declare(strict_types=1);
 namespace FireflyIII\Models;
 
 use Carbon\Carbon;
+use FireflyIII\Casts\SeparateTimezoneCaster;
 use FireflyIII\Support\Models\ReturnsIntegerIdTrait;
 use FireflyIII\Support\Models\ReturnsIntegerUserIdTrait;
 use FireflyIII\User;
@@ -55,7 +56,7 @@ class TransactionJournal extends Model
             'created_at'    => 'datetime',
             'updated_at'    => 'datetime',
             'deleted_at'    => 'datetime',
-            'date'          => 'datetime',
+            'date'          => SeparateTimezoneCaster::class,
             'interest_date' => 'date',
             'book_date'     => 'date',
             'process_date'  => 'date',
diff --git a/resources/views/transactions/show.twig b/resources/views/transactions/show.twig
index 4336941245..82307440a7 100644
--- a/resources/views/transactions/show.twig
+++ b/resources/views/transactions/show.twig
@@ -75,6 +75,9 @@
                             <td style="width:30%;">{{ trans('list.date') }}</td>
                             <td>
                                 {{ first.date.isoFormat(dateTimeFormat) }}
+                                {% if(first.date_tz != '') %}
+                                    ({{ first.date_tz }})
+                                {% endif %}
                             </td>
                         </tr>
                         </tbody>