diff --git a/fail2ban/server/mytime.py b/fail2ban/server/mytime.py
index 98b69bd4..e4b091a7 100644
--- a/fail2ban/server/mytime.py
+++ b/fail2ban/server/mytime.py
@@ -121,8 +121,11 @@ class MyTime:
 
 		@return ISO-capable string representation of given unixTime
 		"""
-		return datetime.datetime.fromtimestamp(
-			unixTime).replace(microsecond=0).strftime(format)
+		# consider end of 9999th year (in GMT+23 to avoid year overflow in other TZ)
+		dt = datetime.datetime.fromtimestamp(
+			unixTime).replace(microsecond=0
+		) if unixTime < 253402214400 else datetime.datetime(9999, 12, 31, 23, 59, 59)
+		return dt.strftime(format)
 
 	## precreate/precompile primitives used in str2seconds:
 
diff --git a/fail2ban/tests/banmanagertestcase.py b/fail2ban/tests/banmanagertestcase.py
index a5b37ef6..3be31bc5 100644
--- a/fail2ban/tests/banmanagertestcase.py
+++ b/fail2ban/tests/banmanagertestcase.py
@@ -154,6 +154,21 @@ class AddFailure(unittest.TestCase):
 		finally:
 			self.__banManager.setBanTime(btime)
 
+	def testBanList(self):
+		tickets = [
+			BanTicket('192.0.2.1', 1167605999.0),
+			BanTicket('192.0.2.2', 1167605999.0),
+		]
+		tickets[1].setBanTime(-1)
+		for t in tickets:
+			self.__banManager.addBanTicket(t)
+		self.assertSortedEqual(self.__banManager.getBanList(ordered=True, withTime=True),
+			[
+			  '192.0.2.1 \t2006-12-31 23:59:59 + 600 = 2007-01-01 00:09:59',
+			  '192.0.2.2 \t2006-12-31 23:59:59 + -1 = 9999-12-31 23:59:59'
+			]
+		)
+
 
 class StatusExtendedCymruInfo(unittest.TestCase):
 	def setUp(self):