diff --git a/emfit/__init__.py b/emfit/__init__.py
old mode 100644
new mode 100755
index a629df8..09a724e
--- a/emfit/__init__.py
+++ b/emfit/__init__.py
@@ -1,18 +1,17 @@
-from datetime import datetime
+#!/usr/bin/env python3
+from datetime import datetime, time
 from pathlib import Path
 from functools import lru_cache
 import logging
+from collections import OrderedDict as odict
 from datetime import timedelta, datetime, date
 from typing import List, Dict, Iterator, NamedTuple
 import json
-
-from collections import OrderedDict as odict
+import pytz
 
 from kython import cproperty
 
 
-fromts = datetime.fromtimestamp
-
 def get_logger():
     return logging.getLogger('emfit-provider')
 
@@ -30,6 +29,15 @@ EXCLUDED = [
 
 AWAKE = 4
 
+# TODO use tz provider for that? although emfit is always in london...
+
+_TZ = pytz.timezone('Europe/London')
+
+def fromts(ts) -> datetime:
+    dt = datetime.fromtimestamp(ts)
+    return _TZ.localize(dt)
+
+
 class Emfit:
     def __init__(self, sid: str, jj):
         self.sid = sid
@@ -78,7 +86,6 @@ class Emfit:
             eps.append(e)
         return tss, eps
 
-    # TODO are these utc?? should be visible on big plot
     @cproperty
     def sleep_start(self) -> datetime:
         for [ts, e] in self.epochs:
@@ -284,5 +291,34 @@ def by_night() -> Dict[date, Emfit]:
 
 
 def test():
-    for d in get_datas():
+    datas = get_datas()
+    for d in datas:
         assert len(d.epochs) > 0
+
+
+def test_tz():
+    datas = get_datas()
+    for d in datas:
+        assert d.start.tzinfo is not None
+        assert d.end.tzinfo is not None
+        assert d.sleep_start.tzinfo is not None
+        assert d.sleep_end.tzinfo is not None
+
+    # https://qs.emfit.com/#/device/presence/***REMOVED***
+    # this was winter time, so GMT, UTC+0
+    sid_20190109 = '***REMOVED***'
+    [s0109] = [s for s in datas if s.sid == sid_20190109]
+    assert s0109.end.time() == time(hour=6, minute=42)
+
+    # summer time, so UTC+1
+    sid_20190411 = '***REMOVED***'
+    [s0411] = [s for s in datas if s.sid == sid_20190411]
+    assert s0411.end.time() == time(hour=9, minute=30)
+
+
+def main():
+    for k, v in by_night().items():
+        print(k, v.start, v.end)
+
+if __name__ == '__main__':
+    main()
diff --git a/run b/run
deleted file mode 100755
index fe846cd..0000000
--- a/run
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/bash
-python3 -m emfit