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docker/routlin-dash/app/settings.py

@@ -31,6 +31,19 @@ def get_host_utc_offset():
     return time.localtime().tm_gmtoff
 
 
+def get_host_timezone():
+    """Return the host timezone name (e.g. 'America/New_York'), or '' if unknown."""
+    tz = os.environ.get('TZ', '').strip()
+    if tz:
+        return tz
+    try:
+        with open('/etc/timezone') as f:
+            return f.read().strip()
+    except OSError:
+        pass
+    return ''
+
+
 def get_credentials_key():
     """Return a Fernet-compatible key derived from the CREDENTIALS_KEY environment variable,
     or None if not set. SHA-256 hashes the raw string to produce 32 bytes, which are then