From 69c5fb9bfe599c7a961285b93c3964b375eb86b0 Mon Sep 17 00:00:00 2001
From: Marco Rieser <marco@rieser.dev>
Date: Wed, 15 Apr 2026 19:07:05 +0200
Subject: [PATCH 1/4] Remove unnecessary comment

---
 src/Events.php | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/Events.php b/src/Events.php
index 86ffed6..c1c07a7 100644
--- a/src/Events.php
+++ b/src/Events.php
@@ -48,7 +48,6 @@ class Events
 
     public static function defaultTimezone(): string
     {
-        // return static::setting('timezone', config('statamic.system.display_timezone') ?? config('app.timezone', 'UTC'));
         return static::setting('timezone');
     }
 

From 5096b07990b54660537b0d2112440c584edc520a Mon Sep 17 00:00:00 2001
From: Marco Rieser <marco@rieser.dev>
Date: Wed, 15 Apr 2026 19:07:41 +0200
Subject: [PATCH 2/4] Use the default timezone as fallback value for the
 timezone param in the tag

---
 src/Tags/Events.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Tags/Events.php b/src/Tags/Events.php
index 67b38a7..c82aa1a 100755
--- a/src/Tags/Events.php
+++ b/src/Tags/Events.php
@@ -194,7 +194,7 @@ private function generator(): Generator
                 value: $this->params->bool('collapse_multi_days'),
                 callback: fn (Generator $generator) => $generator->collapseMultiDays()
             )->when(
-                value: $this->params->get('timezone'),
+                value: $this->params->get('timezone', Generator::defaultTimezone()),
                 callback: fn (Generator $generator, string $tz) => $generator->timezone(timezone: $tz)
             );
     }

From 54f3bc7565aab460e5d141913f15f9e85a969b56 Mon Sep 17 00:00:00 2001
From: Marco Rieser <marco@rieser.dev>
Date: Wed, 15 Apr 2026 19:20:34 +0200
Subject: [PATCH 3/4] Refactor groupBy logic by introducing `spanningDays`
 helper function

---
 src/Tags/Events.php | 23 +++++++++++++----------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/Tags/Events.php b/src/Tags/Events.php
index c82aa1a..6af6405 100755
--- a/src/Tags/Events.php
+++ b/src/Tags/Events.php
@@ -47,16 +47,7 @@ public function calendar(): Collection
         $occurrences = $this
             ->generator()
             ->between(from: $from, to: $to)
-            ->groupBy(function (Entry $occurrence) {
-                $periodInTimezone = CarbonPeriodImmutable::between(
-                    $occurrence->start->setTimezone($this->params->get('timezone') ?? Generator::defaultTimezone())->startOfDay(),
-                    $occurrence->end->setTimezone($this->params->get('timezone') ?? Generator::defaultTimezone())->endOfDay()
-                );
-
-                return collect($periodInTimezone->toArray())
-                    ->map(fn (CarbonImmutable $date) => $date->toDateString())
-                    ->all();
-            })
+            ->groupBy($this->spanningDays())
             ->map(fn(EntryCollection $occurrences, string $date) => $this->day(date: $date, occurrences: $occurrences));
 
         $days = $this->output($this->makeEmptyDates(from: $from, to: $to)->merge($occurrences)->values());
@@ -252,4 +243,16 @@ private function parseTermIds(string $key, array|Builder|string $terms): array
             ->map(fn (Term|string $term) => $this->getTermId(handle: $handle, term: $term))
             ->all();
     }
+
+    private function spanningDays(): \Closure
+    {
+        return function (Entry $occurrence) {
+            $spanningDays = CarbonPeriodImmutable::between(
+                $occurrence->start->startOfDay(),
+                $occurrence->end->endOfDay()
+            )->toArray();
+
+            return collect($spanningDays)->map(fn(CarbonImmutable $date) => $date->toDateString())->all();
+        };
+    }
 }

From 458ac27f6c50bdc0f5599d95ed0d2930b097a60f Mon Sep 17 00:00:00 2001
From: Marco Rieser <marco@rieser.dev>
Date: Wed, 15 Apr 2026 19:36:26 +0200
Subject: [PATCH 4/4] Rename `spans_days` to `spanning`

---
 src/Events.php            | 2 +-
 tests/Tags/EventsTest.php | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Events.php b/src/Events.php
index c1c07a7..f16fe71 100644
--- a/src/Events.php
+++ b/src/Events.php
@@ -174,7 +174,7 @@ private function output(callable $type): EntryCollection|LengthAwarePaginator
                 return $occurrence
                     ->setSupplement('start', $start)
                     ->setSupplement('end', $end)
-                    ->setSupplement('spans_days', ! $start->isSameDay($end));
+                    ->setSupplement('spanning', ! $start->isSameDay($end));
             });
         }
 
diff --git a/tests/Tags/EventsTest.php b/tests/Tags/EventsTest.php
index ca42b5f..51a5b80 100755
--- a/tests/Tags/EventsTest.php
+++ b/tests/Tags/EventsTest.php
@@ -428,7 +428,7 @@
         ->first()->start->timezone->getName()->toBe('America/Vancouver');
 });
 
-it('sets "spans_days"', function () {
+it('sets "spanning"', function () {
     Carbon::setTestNow(now()->setTimeFromTimeString('10:00'));
 
     Entry::make()
@@ -454,5 +454,5 @@
     $occurrences = $this->tag->between();
 
     expect($occurrences)->toHaveCount(1)
-        ->first()->spans_days->toBeTrue();
+        ->first()->spanning->toBeTrue();
 });