diff --git a/docs/user-guide/configuration.md b/docs/user-guide/configuration.md
index fbccd93..4a49e5b 100644
--- a/docs/user-guide/configuration.md
+++ b/docs/user-guide/configuration.md
@@ -247,6 +247,7 @@ stop_on_restart = false
 date_format = %Y.%m.%d
 time_format = %H:%M:%S%z
 week_start = monday
+day_start_hour = 0
 log_current = false
 pager = true
 report_current = false
diff --git a/watson/cli.py b/watson/cli.py
index cc8c593..e553080 100644
--- a/watson/cli.py
+++ b/watson/cli.py
@@ -20,7 +20,7 @@
     get_rename_old_name,
     get_rename_types,
 )
-from .frames import Frame
+from .frames import Frame, shifted_from
 from .utils import (
     apply_weekday_offset,
     build_csv,
@@ -1069,6 +1069,8 @@ def log(watson, current, reverse, from_, to, projects, tags, ignore_projects,
                        if _ is not None):
         from_ = start_time
 
+    from_ = shifted_from(from_)
+
     if from_ > to:
         raise click.ClickException("'from' must be anterior to 'to'")
 
diff --git a/watson/frames.py b/watson/frames.py
index 0e51157..1c329c0 100644
--- a/watson/frames.py
+++ b/watson/frames.py
@@ -7,6 +7,36 @@
 HEADERS = ('start', 'stop', 'project', 'id', 'tags', 'updated_at')
 
 
+hour_shift = 0
+
+
+def set_hour_shift(hour):
+    global hour_shift
+    hour_shift = hour
+
+
+def shifted_floor(time, timeframe):
+    time = time.shift(hours=-hour_shift)
+    time = time.floor(timeframe)
+    time = time.shift(hours=hour_shift)
+    return time
+
+
+def shifted_ceil(time, timeframe):
+    time = time.shift(hours=-hour_shift)
+    time = time.ceil(timeframe)
+    time = time.shift(hours=hour_shift)
+    return time
+
+
+def shifted_from(from_):
+    if from_ == from_.floor('day'):
+        if arrow.now().hour < hour_shift:
+            from_ = from_.shift(days=-1)
+        from_ = from_.shift(hours=hour_shift)
+    return from_
+
+
 class Frame(namedtuple('Frame', HEADERS)):
     def __new__(cls, start, stop, project, id, tags=None, updated_at=None,):
         try:
@@ -45,7 +75,7 @@ def dump(self):
 
     @property
     def day(self):
-        return self.start.floor('day')
+        return shifted_floor(self.start, 'day')
 
     def __lt__(self, other):
         return self.start < other.start
@@ -63,8 +93,8 @@ def __gte__(self, other):
 class Span(object):
     def __init__(self, start, stop, timeframe='day'):
         self.timeframe = timeframe
-        self.start = start.floor(self.timeframe)
-        self.stop = stop.ceil(self.timeframe)
+        self.start = shifted_floor(start, self.timeframe)
+        self.stop = shifted_ceil(stop, self.timeframe)
 
     def overlaps(self, frame):
         return frame.start <= self.stop and frame.stop >= self.start
diff --git a/watson/watson.py b/watson/watson.py
index 3f39be2..b0db440 100644
--- a/watson/watson.py
+++ b/watson/watson.py
@@ -10,7 +10,7 @@
 import subprocess
 
 from .config import ConfigParser
-from .frames import Frames
+from .frames import Frames, set_hour_shift, shifted_from
 from .utils import deduplicate, make_json_writer, safe_save, sorted_groupby
 from .version import version as __version__  # noqa
 
@@ -66,6 +66,8 @@ def __init__(self, **kwargs):
         if 'last_sync' in kwargs:
             self.last_sync = kwargs['last_sync']
 
+        set_hour_shift(self.config.getint('options', 'day_start_hour', 0))
+
     def _load_json_file(self, filename, type=dict):
         """
         Return the content of the the given JSON file.
@@ -533,6 +535,8 @@ def report(self, from_, to, current=None, projects=None, tags=None,
                            if _ is not None):
             from_ = start_time
 
+        from_ = shifted_from(from_)
+
         if not self._validate_report_options(projects, ignore_projects):
             raise WatsonError(
                 "given projects can't be ignored at the same time")