From 34e89ea3f9cd2bbd4eaec4cc82232d0f43590d56 Mon Sep 17 00:00:00 2001
From: Dennis Guse <dennis.guse@alumni.tu-berlin.de>
Date: Sat, 20 Jun 2026 18:52:43 +0200
Subject: [PATCH] TimeZoneOffsets now supports minutes.

Fixes #2357.
---
 .../opentracks/ui/ZoneOffsetAdapter.java      | 48 +++++++++++++++++--
 1 file changed, 43 insertions(+), 5 deletions(-)

diff --git a/src/main/java/de/dennisguse/opentracks/ui/ZoneOffsetAdapter.java b/src/main/java/de/dennisguse/opentracks/ui/ZoneOffsetAdapter.java
index 9ae5148b0..310e9ff38 100644
--- a/src/main/java/de/dennisguse/opentracks/ui/ZoneOffsetAdapter.java
+++ b/src/main/java/de/dennisguse/opentracks/ui/ZoneOffsetAdapter.java
@@ -7,13 +7,51 @@ import android.widget.ArrayAdapter;
 import androidx.annotation.NonNull;
 
 import java.time.ZoneOffset;
-import java.util.stream.IntStream;
 
+/**
+ * <a href="Data source for UTC Offsets">https://en.wikipedia.org/wiki/List_of_UTC_offsets</a>
+ */
 public class ZoneOffsetAdapter extends ArrayAdapter<ZoneOffset> {
     public ZoneOffsetAdapter(@NonNull Context context, int resource) {
-        super(context, resource, IntStream.range(-12, +12)
-                .boxed()
-                .map(ZoneOffset::ofHours)
-                .toList());
+        super(context, resource);
+
+        addAll(
+                ZoneOffset.ofHoursMinutes(-12, 00),
+                ZoneOffset.ofHoursMinutes(-11, 00),
+                ZoneOffset.ofHoursMinutes(-10, 00),
+                ZoneOffset.ofHoursMinutes(-9, -30),
+                ZoneOffset.ofHoursMinutes(-8, 00),
+                ZoneOffset.ofHoursMinutes(-7, 00),
+                ZoneOffset.ofHoursMinutes(-6, 00),
+                ZoneOffset.ofHoursMinutes(-5, 00),
+                ZoneOffset.ofHoursMinutes(-4, 00),
+                ZoneOffset.ofHoursMinutes(-3, -30),
+                ZoneOffset.ofHoursMinutes(-3, 00),
+                ZoneOffset.ofHoursMinutes(-2, 00),
+                ZoneOffset.ofHoursMinutes(-1, 00),
+                ZoneOffset.ofHoursMinutes(0, 00),
+                ZoneOffset.ofHoursMinutes(1, 00),
+                ZoneOffset.ofHoursMinutes(2, 00),
+                ZoneOffset.ofHoursMinutes(3, 00),
+                ZoneOffset.ofHoursMinutes(3, 30),
+                ZoneOffset.ofHoursMinutes(4, 00),
+                ZoneOffset.ofHoursMinutes(4, 30),
+                ZoneOffset.ofHoursMinutes(5, 30),
+                ZoneOffset.ofHoursMinutes(5, 45),
+                ZoneOffset.ofHoursMinutes(6, 00),
+                ZoneOffset.ofHoursMinutes(6, 30),
+                ZoneOffset.ofHoursMinutes(7, 00),
+                ZoneOffset.ofHoursMinutes(8, 00),
+                ZoneOffset.ofHoursMinutes(8, 45),
+                ZoneOffset.ofHoursMinutes(9, 00),
+                ZoneOffset.ofHoursMinutes(9, 30),
+                ZoneOffset.ofHoursMinutes(10, 00),
+                ZoneOffset.ofHoursMinutes(10, 30),
+                ZoneOffset.ofHoursMinutes(11, 00),
+                ZoneOffset.ofHoursMinutes(12, 00),
+                ZoneOffset.ofHoursMinutes(12, 45),
+                ZoneOffset.ofHoursMinutes(13, 00),
+                ZoneOffset.ofHoursMinutes(14, 00)
+        );
     }
 }