diff --git a/panoramix/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py b/panoramix/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py
new file mode 100644
index 000000000..784657753
--- /dev/null
+++ b/panoramix/migrations/versions/2929af7925ed_tz_offsets_in_data_sources.py
@@ -0,0 +1,24 @@
+"""TZ offsets in data sources
+
+Revision ID: 2929af7925ed
+Revises: 1e2841a4128
+Create Date: 2015-10-19 20:54:00.565633
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '2929af7925ed'
+down_revision = '1e2841a4128'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+def upgrade():
+    op.add_column('datasources', sa.Column('offset', sa.Integer(), nullable=True))
+    op.add_column('tables', sa.Column('offset', sa.Integer(), nullable=True))
+
+
+def downgrade():
+    op.drop_column('tables', 'offset')
+    op.drop_column('datasources', 'offset')
diff --git a/panoramix/models.py b/panoramix/models.py
index cf5f82b44..7cd97295e 100644
--- a/panoramix/models.py
+++ b/panoramix/models.py
@@ -11,9 +11,8 @@ from sqlalchemy import (
 from sqlalchemy import Table
 from sqlalchemy import create_engine, MetaData, desc, select, and_
 from sqlalchemy.orm import relationship
-from sqlalchemy.sql import table, literal_column, text, column
+from sqlalchemy.sql import table, literal_column, text
 from sqlalchemy.sql.elements import ColumnClause
-from flask import request
 
 from copy import deepcopy, copy
 from collections import namedtuple
@@ -201,7 +200,7 @@ class Database(Model, AuditMixinNullable):
             autoload_with=self.get_sqla_engine())
 
 
-class SqlaTable(Model, Queryable, AuditMixinNullable):
+class SqlaTable(Model, Queryable):
     type = "table"
 
     __tablename__ = 'tables'
@@ -212,6 +211,7 @@ class SqlaTable(Model, Queryable, AuditMixinNullable):
     database_id = Column(Integer, ForeignKey('dbs.id'), nullable=False)
     database = relationship(
         'Database', backref='tables', foreign_keys=[database_id])
+    offset = Column(Integer, default=0)
 
     baselink = "tableview"
 
@@ -655,6 +655,7 @@ class Datasource(Model, AuditMixin, Queryable):
         String(250), ForeignKey('clusters.cluster_name'))
     cluster = relationship(
         'Cluster', backref='datasources', foreign_keys=[cluster_name])
+    offset = Column(Integer, default=0)
 
     @property
     def metrics_combo(self):
diff --git a/panoramix/views.py b/panoramix/views.py
index 9a36c1cd1..da5dbc330 100644
--- a/panoramix/views.py
+++ b/panoramix/views.py
@@ -126,10 +126,14 @@ appbuilder.add_view(
 class TableView(PanoramixModelView, DeleteMixin):
     datamodel = SQLAInterface(models.SqlaTable)
     list_columns = ['table_link', 'database']
-    add_columns = ['table_name', 'database', 'default_endpoint']
+    add_columns = ['table_name', 'database', 'default_endpoint', 'offset']
     edit_columns = [
-        'table_name', 'database', 'main_dttm_col', 'default_endpoint']
+        'table_name', 'database', 'main_dttm_col', 'default_endpoint',
+        'offset']
     related_views = [TableColumnInlineView, SqlMetricInlineView]
+    description_columns = {
+        'offset': "Timezone offset (in hours) for this datasource"
+    }
 
     def post_add(self, table):
         try:
@@ -219,13 +223,17 @@ appbuilder.add_view(
 class DatasourceModelView(PanoramixModelView, DeleteMixin):
     datamodel = SQLAInterface(models.Datasource)
     list_columns = [
-        'datasource_link', 'cluster', 'owner', 'is_featured', 'is_hidden']
+        'datasource_link', 'cluster', 'owner', 'is_featured', 'is_hidden',
+        'offset']
     related_views = [ColumnInlineView, MetricInlineView]
     edit_columns = [
         'datasource_name', 'cluster', 'description', 'owner',
-        'is_featured', 'is_hidden', 'default_endpoint']
+        'is_featured', 'is_hidden', 'default_endpoint', 'offset']
     page_size = 100
     base_order = ('datasource_name', 'asc')
+    description_columns = {
+        'offset': "Timezone offset (in hours) for this datasource"
+    }
 
     def post_add(self, datasource):
         datasource.generate_metrics()
diff --git a/panoramix/viz.py b/panoramix/viz.py
index 4c766f654..d45a40097 100644
--- a/panoramix/viz.py
+++ b/panoramix/viz.py
@@ -1,6 +1,5 @@
 from collections import OrderedDict, defaultdict
-from copy import copy
-from datetime import datetime
+from datetime import datetime, timedelta
 import json
 import uuid
 
@@ -110,6 +109,8 @@ class BaseViz(object):
         else:
             if 'timestamp' in df.columns:
                 df.timestamp = pd.to_datetime(df.timestamp)
+                if self.datasource.offset:
+                    df.timestamp += timedelta(hours=self.datasource.offset)
         return df
 
     @property