diff --git a/src/utils/relative_date.py b/src/utils/relative_date.py
new file mode 100644
index 0000000..6ecde67
--- /dev/null
+++ b/src/utils/relative_date.py
@@ -0,0 +1,44 @@
+# relative_date.py
+#
+# Copyright 2022-2023 kramo
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from datetime import datetime
+
+from gi.repository import GLib
+
+
+def relative_date(timestamp):  # pylint: disable=too-many-return-statements
+    days_no = ((today := datetime.today()) - datetime.fromtimestamp(timestamp)).days
+
+    if days_no == 0:
+        return _("Today")
+    if days_no == 1:
+        return _("Yesterday")
+    if days_no <= (day_of_week := today.weekday()):
+        return GLib.DateTime.new_from_unix_utc(timestamp).format("%A")
+    if days_no <= day_of_week + 7:
+        return _("Last Week")
+    if days_no <= (day_of_month := today.day):
+        return _("This Month")
+    if days_no <= day_of_month + 30:
+        return _("Last Month")
+    if days_no < (day_of_year := today.timetuple().tm_yday):
+        return GLib.DateTime.new_from_unix_utc(timestamp).format("%B")
+    if days_no <= day_of_year + 365:
+        return _("Last Year")
+    return GLib.DateTime.new_from_unix_utc(timestamp).format("%Y")
diff --git a/src/window.py b/src/window.py
index 59205c8..d82b07a 100644
--- a/src/window.py
+++ b/src/window.py
@@ -17,11 +17,10 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-from datetime import datetime
-
-from gi.repository import Adw, GLib, Gtk
+from gi.repository import Adw, Gtk
 
 from src import shared  # pylint: disable=no-name-in-module
+from src.utils.relative_date import relative_date
 
 
 @Gtk.Template(resource_path=shared.PREFIX + "/gtk/window.ui")
@@ -158,19 +157,6 @@ class CartridgesWindow(Adw.ApplicationWindow):
     def set_active_game(self, _widget, _pspec, game):
         self.active_game = game
 
-    def get_time(self, timestamp):
-        days_no = (datetime.today() - datetime.fromtimestamp(timestamp)).days
-
-        if days_no == 0:
-            return _("Today")
-        if days_no == 1:
-            return _("Yesterday")
-        if days_no < 8:
-            return GLib.DateTime.new_from_unix_utc(timestamp).format("%A")
-        if days_no < 335:
-            return GLib.DateTime.new_from_unix_utc(timestamp).format("%B")
-        return GLib.DateTime.new_from_unix_utc(timestamp).format("%Y")
-
     def show_details_view(self, game):
         self.active_game = game
 
@@ -200,13 +186,13 @@ class CartridgesWindow(Adw.ApplicationWindow):
         self.details_view_title.set_label(game.name)
         self.details_view_header_bar_title.set_title(game.name)
 
-        date = self.get_time(game.added)
+        date = relative_date(game.added)
         self.details_view_added.set_label(
             # The variable is the date when the game was added
             _("Added: {}").format(date)
         )
         last_played_date = (
-            self.get_time(game.last_played) if game.last_played else _("Never")
+            relative_date(game.last_played) if game.last_played else _("Never")
         )
         self.details_view_last_played.set_label(
             # The variable is the date when the game was last played