diff --git a/database/seeders/DatabaseSeeder.php b/database/seeders/DatabaseSeeder.php
index 0788740..aad2d61 100644
--- a/database/seeders/DatabaseSeeder.php
+++ b/database/seeders/DatabaseSeeder.php
@@ -73,29 +73,29 @@ class DatabaseSeeder extends Seeder
 
         $yearPeriods = YearPeriod::all();
 
-        foreach ($users as $user) {
-            VacationRequest::factory()
-                ->count(10)
-                ->for($user)
-                ->sequence(fn() => [
-                    "year_period_id" => $yearPeriods->random()->id,
-                ])
-                ->afterCreating(function (VacationRequest $vacationRequest): void {
-                    $days = app(VacationDaysCalculator::class)->calculateDays(
-                        $vacationRequest->yearPeriod,
-                        $vacationRequest->from,
-                        $vacationRequest->to,
-                    );
-
-                    foreach ($days as $day) {
-                        $vacationRequest->vacations()->create([
-                            "date" => $day,
-                            "user_id" => $vacationRequest->user->id,
-                        ]);
-                    }
-                })
-                ->create();
-        }
+//        foreach ($users as $user) {
+//            VacationRequest::factory()
+//                ->count(10)
+//                ->for($user)
+//                ->sequence(fn() => [
+//                    "year_period_id" => $yearPeriods->random()->id,
+//                ])
+//                ->afterCreating(function (VacationRequest $vacationRequest): void {
+//                    $days = app(VacationDaysCalculator::class)->calculateDays(
+//                        $vacationRequest->yearPeriod,
+//                        $vacationRequest->from,
+//                        $vacationRequest->to,
+//                    );
+//
+//                    foreach ($days as $day) {
+//                        $vacationRequest->vacations()->create([
+//                            "date" => $day,
+//                            "user_id" => $vacationRequest->user->id,
+//                        ]);
+//                    }
+//                })
+//                ->create();
+//        }
     }
 
     protected function generateAvatarsForUsers(Collection $users): void
diff --git a/resources/js/Pages/Calendar.vue b/resources/js/Pages/Calendar.vue
index 58a15ea..6511e6b 100644
--- a/resources/js/Pages/Calendar.vue
+++ b/resources/js/Pages/Calendar.vue
@@ -62,7 +62,7 @@
               v-for="day in calendar"
               :key="day.dayOfMonth"
               class="border border-gray-300 text-lg font-semibold text-gray-900 py-4 px-2"
-              :class="{ 'bg-blumilk-500 text-white': day.isToday}"
+              :class="{ 'text-blumilk-600 bg-blumilk-25 font-black': day.isToday}"
             >
               <div>
                 {{ day.dayOfMonth }}
@@ -98,7 +98,7 @@
               v-for="day in calendar"
               :key="day.dayOfMonth"
               class="border border-gray-300"
-              :class="{'bg-gray-100': day.isWeekend, 'bg-green-100': day.isHoliday, 'bg-blumilk-200': userVacation.vacations.includes(day.date) }"
+              :class="{'bg-gray-100': day.isWeekend, 'bg-green-100': day.isHoliday, 'bg-blumilk-500': userVacation.vacations.includes(day.date) }"
             >
               <div
                 v-if="userVacation.vacations.includes(day.date)"
diff --git a/tests/Feature/VacationRequestTest.php b/tests/Feature/VacationRequestTest.php
index 6731fc7..8b98466 100644
--- a/tests/Feature/VacationRequestTest.php
+++ b/tests/Feature/VacationRequestTest.php
@@ -1,18 +1,33 @@
 <?php
+
 declare(strict_types=1);
+
 namespace Tests\Feature;
+
 use Illuminate\Foundation\Testing\DatabaseMigrations;
 use Illuminate\Support\Carbon;
 use Inertia\Testing\AssertableInertia as Assert;
 use Tests\FeatureTestCase;
 use Toby\Domain\Enums\VacationRequestState;
 use Toby\Domain\Enums\VacationType;
+use Toby\Domain\PolishHolidaysRetriever;
 use Toby\Eloquent\Models\User;
 use Toby\Eloquent\Models\VacationRequest;
 use Toby\Eloquent\Models\YearPeriod;
+
 class VacationRequestTest extends FeatureTestCase
 {
     use DatabaseMigrations;
+
+    protected PolishHolidaysRetriever $polishHolidaysRetriever;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->polishHolidaysRetriever = $this->app->make(PolishHolidaysRetriever::class);
+    }
+
     public function testUserCanSeeVacationRequestsList(): void
     {
         $user = User::factory()->createQuietly();
@@ -35,7 +50,9 @@ class VacationRequestTest extends FeatureTestCase
     public function testUserCanCreateVacationRequest(): void
     {
         $user = User::factory()->createQuietly();
+
         $currentYearPeriod = YearPeriod::current();
+
         $this->actingAs($user)
             ->post("/vacation-requests", [
                 "type" => VacationType::VACATION->value,
@@ -83,7 +100,9 @@ class VacationRequestTest extends FeatureTestCase
 
         $currentYearPeriod = YearPeriod::current();
 
-        $vacationRequest = VacationRequest::factory(["state" => VacationRequestState::WAITING_FOR_ADMINISTRATIVE])
+        $vacationRequest = VacationRequest::factory([
+            "state" => VacationRequestState::WAITING_FOR_ADMINISTRATIVE,
+        ])
             ->for($user)
             ->for($currentYearPeriod)
             ->create();
@@ -116,6 +135,48 @@ class VacationRequestTest extends FeatureTestCase
             "state" => VacationRequestState::REJECTED,
         ]);
     }
+
+    public function testUserCannotCreateVacationRequestAtWeekend(): void
+    {
+        $user = User::factory()->createQuietly();
+        $currentYearPeriod = YearPeriod::current();
+
+        $this->actingAs($user)
+            ->post("/vacation-requests", [
+                "type" => VacationType::VACATION->value,
+                "from" => Carbon::create($currentYearPeriod->year, 2, 5)->toDateString(),
+                "to" => Carbon::create($currentYearPeriod->year, 2, 6)->toDateString(),
+                "comment" => "Vacation at weekend.",
+            ])
+            ->assertSessionHasErrors([
+                "vacationRequest" => trans("Vacation needs minimum one day."),
+            ]);
+    }
+
+    public function testUserCannotCreateVacationRequestAtHoliday(): void
+    {
+        $user = User::factory()->createQuietly();
+        $currentYearPeriod = YearPeriod::current();
+
+        foreach ($this->polishHolidaysRetriever->getForYearPeriod($currentYearPeriod) as $holiday) {
+            $currentYearPeriod->holidays()->create([
+                "name" => $holiday["name"],
+                "date" => $holiday["date"],
+            ]);
+        }
+
+        $this->actingAs($user)
+            ->post("/vacation-requests", [
+                "type" => VacationType::VACATION->value,
+                "from" => Carbon::create($currentYearPeriod->year, 4, 18)->toDateString(),
+                "to" => Carbon::create($currentYearPeriod->year, 4, 18)->toDateString(),
+                "comment" => "Vacation at holiday.",
+            ])
+            ->assertSessionHasErrors([
+                "vacationRequest" => trans("Vacation needs minimum one day."),
+            ]);
+    }
+
     public function testUserCannotCreateVacationRequestIfHeHasPendingVacationRequestInThisRange(): void
     {
         $user = User::factory()->createQuietly();
@@ -201,4 +262,4 @@ class VacationRequestTest extends FeatureTestCase
                 "vacationRequest" => trans("The vacation request cannot be created at the turn of the year."),
             ]);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/FeatureTestCase.php b/tests/FeatureTestCase.php
index de0d193..084d811 100644
--- a/tests/FeatureTestCase.php
+++ b/tests/FeatureTestCase.php
@@ -17,7 +17,7 @@ abstract class FeatureTestCase extends BaseTestCase
     {
         parent::setUp();
 
-        Carbon::setTestNow(Carbon::now());
+        Carbon::setTestNow(Carbon::createFromDate(2022, 1, 1));
         $this->createCurrentYearPeriod();
     }
 }
diff --git a/tests/Unit/VacationRequestStatesTest.php b/tests/Unit/VacationRequestStatesTest.php
index 69cec4b..02479c7 100644
--- a/tests/Unit/VacationRequestStatesTest.php
+++ b/tests/Unit/VacationRequestStatesTest.php
@@ -1,5 +1,7 @@
 <?php
+
 declare(strict_types=1);
+
 namespace Tests\Unit;
 
 use Illuminate\Foundation\Testing\DatabaseMigrations;
@@ -95,4 +97,4 @@ class VacationRequestStatesTest extends TestCase
 
         $this->assertEquals(VacationRequestState::APPROVED, $vacationRequest->state);
     }
-}
\ No newline at end of file
+}