diff --git a/src/Utils.php b/src/Utils.php
index 8abbcc7..388cd03 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -37,7 +37,8 @@ public static function transformCurrencies(array $currencies): array
 	 */
 	public static function countTTL(DateTime $dateTime, int $beforeExpiration = 900): int
 	{
-		if (($dateTime->getTimestamp() - $beforeExpiration) < time()) {
+		$time = time();
+		if (($dateTime->getTimestamp() - $beforeExpiration) <= $time) {
 			$dateTime->modify('+1 day');
 		}
 
diff --git a/tests/src/Driver/Cnb/DayTest.php b/tests/src/Driver/Cnb/DayTest.php
index 3aeb09e..19f7a9f 100644
--- a/tests/src/Driver/Cnb/DayTest.php
+++ b/tests/src/Driver/Cnb/DayTest.php
@@ -2,12 +2,9 @@
 
 namespace h4kuna\Exchange\Tests\Driver\Cnb;
 
-use GuzzleHttp\Client;
-use GuzzleHttp\Psr7\HttpFactory;
 use h4kuna\Exchange\Driver\Cnb\Day;
 use h4kuna\Exchange\Driver\Cnb\Property;
 use h4kuna\Exchange\Fixtures\SourceListBuilder;
-use h4kuna\Exchange\Utils;
 use Tester\Assert;
 use Tester\TestCase;
 
@@ -31,23 +28,6 @@ public function testDownloadHistory(): void
 		Assert::equal($expected, $list);
 	}
 
-
-	public function testRefresh(): void
-	{
-		$client = new HttpFactory();
-		$day = new Day(new Client(), $client);
-
-		Assert::same((new \DateTime('now', new \DateTimeZone('Europe/Prague')))->format('Y-m-d'), $day->getRefresh()->format('Y-m-d'));
-
-		$prevTtl = 900;
-		$refresh = new \DateTime('today 15:00:00', new \DateTimeZone('Europe/Prague'));
-		if ($refresh->getTimestamp() < (time() - $prevTtl)) {
-			$refresh->modify('+1 day');
-		}
-
-		Assert::same($refresh->getTimestamp() - time(), Utils::countTTL($day->getRefresh(), $prevTtl));
-	}
-
 }
 
 (new DayTest())->run();
diff --git a/tests/src/UtilsTest.php b/tests/src/UtilsTest.php
new file mode 100644
index 0000000..71d1fe5
--- /dev/null
+++ b/tests/src/UtilsTest.php
@@ -0,0 +1,62 @@
+<?php
+
+declare(strict_types=1);
+
+namespace h4kuna\Exchange\Tests;
+
+use Closure;
+use DateTime;
+use h4kuna\Exchange\Utils;
+use Tester\Assert;
+use Tester\TestCase;
+
+require __DIR__ . '/../bootstrap.php';
+
+final class UtilsTest extends TestCase
+{
+	/**
+	 * @return array<string|int, array{0: Closure(static):void}>
+	 */
+	public function data(): array
+	{
+		return [
+			[
+				function (self $self) {
+					$self->assert(
+						901,
+						new DateTime('+901 seconds'),
+					);
+				},
+			],
+			[
+				function (self $self) {
+					$self->assert(
+						87300,
+						new DateTime('+900 seconds'),
+					);
+				},
+			],
+		];
+	}
+
+
+	/**
+	 * @param Closure(static):void $assert
+	 * @dataProvider data
+	 */
+	public function testCountTTL(Closure $assert): void
+	{
+		$assert($this);
+	}
+
+
+	public function assert(
+		int $expectedTime,
+		DateTime $from
+	): void
+	{
+		Assert::same($expectedTime, Utils::countTTL($from));
+	}
+}
+
+(new UtilsTest())->run();