1 files changed, 9 insertions, 0 deletions
diff --git a/app/src/main/java/se/leap/bitmaskclient/base/utils/ConfigHelper.java b/app/src/main/java/se/leap/bitmaskclient/base/utils/ConfigHelper.java
index 64b51960..92010992 100644
--- a/app/src/main/java/se/leap/bitmaskclient/base/utils/ConfigHelper.java
+++ b/app/src/main/java/se/leap/bitmaskclient/base/utils/ConfigHelper.java
@@ -197,6 +197,15 @@ public class ConfigHelper {
         return Calendar.getInstance().get(Calendar.ZONE_OFFSET) / 3600000;
     }
 
+    public static int timezoneDistance(int local_timezone, int remoteTimezone) {
+        // Distance along the numberline of Prime Meridian centric, assumes UTC-11 through UTC+12
+        int dist = Math.abs(local_timezone - remoteTimezone);
+        // Farther than 12 timezones and it's shorter around the "back"
+        if (dist > 12)
+            dist = 12 - (dist - 12); // Well i'll be. Absolute values make equations do funny things.
+        return dist;
+    }
+
     public static String getProviderFormattedString(Resources resources, @StringRes int resourceId) {
         String appName = resources.getString(R.string.app_name);
         return resources.getString(resourceId, appName);