Core/Calendar: Improve calendar timezone handling

Port From (https://github.com/TrinityCore/TrinityCore/commit/5600316c9f69d2afda82ae0e632715b420dfd402)
2022-06-18 17:39:24 -04:00
parent c00d9572c7
commit 1bb3a79b54
2 changed files with 11 additions and 0 deletions
@@ -141,6 +141,11 @@ public static class Time
        return hourLocal;
    }

+    public static long LocalTimeToUTCTime(long time)
+    {
+        return DateTimeToUnixTime(UnixTimeToDateTime(time).ToUniversalTime());
+    }
+
    public static string secsToTimeString(ulong timeInSecs, TimeFormat timeFormat = TimeFormat.FullText, bool hoursOnly = false)
    {
        ulong secs = timeInSecs % Minute;