diff --git a/atpbar/main.py b/atpbar/main.py
index 8d06900..e6dc2a1 100644
--- a/atpbar/main.py
+++ b/atpbar/main.py
@@ -1,6 +1,5 @@
 import contextlib
 import logging
-import time
 import uuid
 from collections.abc import Iterable, Iterator
 from typing import Generic, Optional, TypeVar
@@ -11,12 +10,7 @@
 T = TypeVar('T')
 
 
-def atpbar(
-    iterable: Iterable[T],
-    /,
-    name: Optional[str] = None,
-    time_track: Optional[bool] = False,
-) -> Iterable[T]:
+def atpbar(iterable: Iterable[T], /, name: Optional[str] = None) -> Iterable[T]:
     """returns an instance of `Atpbar`
 
     Parameters
@@ -44,7 +38,7 @@ def atpbar(
     if name is None:
         name = repr(iterable)
 
-    return Atpbar(iterable, name=name, len_=len_, time_track=time_track)
+    return Atpbar(iterable, name=name, len_=len_)
 
 
 class Atpbar(Generic[T]):
@@ -65,18 +59,11 @@ class Atpbar(Generic[T]):
 
     """
 
-    def __init__(
-        self,
-        iterable: Iterable[T],
-        name: str,
-        len_: int,
-        time_track: Optional[bool] = False,
-    ):
+    def __init__(self, iterable: Iterable[T], name: str, len_: int):
         self.iterable = iterable
         self.name = name
         self.len_ = len_
         self.id_ = uuid.uuid4()
-        self.time_track = time_track
 
     def __iter__(self) -> Iterator[T]:
         with fetch_reporter() as reporter:
@@ -95,8 +82,6 @@ def _report_start(self) -> None:
             return
         try:
             report = Report(taskid=self.id_, name=self.name, done=0, total=self.len_)
-            if self.time_track:
-                report["start_time"] = time.time()
             self.reporter.report(report)
         except BaseException:
             pass
diff --git a/atpbar/presentation/barjupyter.py b/atpbar/presentation/barjupyter.py
index 476ca68..4c9e2e8 100755
--- a/atpbar/presentation/barjupyter.py
+++ b/atpbar/presentation/barjupyter.py
@@ -88,24 +88,9 @@ def _update_widget(self, report: Report) -> None:
         bar = (":" * int(percent * 40)).ljust(40, " ")
         percent = round(percent * 100, 2)
         name = report["name"][0:name_field_length]
-        if "start_time" in report.keys():
-            elapsed_str, remaining_str = self._get_time_track(
-                report["start_time"], percent
-            )
-            label.value = (
-                "<pre> | {:8d} / {:8d}  ({:s} / {:s}) |: {:<{}s}</pre>".format(
-                    report["done"],
-                    report["total"],
-                    elapsed_str,
-                    remaining_str,
-                    name,
-                    name_field_length,
-                )
-            )
-        else:
-            label.value = "<pre> | {:8d} / {:8d} |: {:<{}s}</pre>".format(
-                report["done"], report["total"], name, name_field_length
-            )
+        label.value = "<pre> | {:8d} / {:8d} |: {:<{}s}</pre>".format(
+            report["done"], report["total"], name, name_field_length
+        )
 
     def _reorder_widgets(self, report: Report) -> None:
         for taskid in self._finishing_taskids:
diff --git a/atpbar/presentation/bartty.py b/atpbar/presentation/bartty.py
index 466388d..5b0bdfd 100755
--- a/atpbar/presentation/bartty.py
+++ b/atpbar/presentation/bartty.py
@@ -87,12 +87,6 @@ def _compose_bar_from_report(self, report: Report) -> str:
 
         format = " {percent:6.2f}% {bar:s} | {done:8d} / {total:8d} |:  {name} "
 
-        if "start_time" in report.keys():
-            elapsed_str, remaining_str = self._get_time_track(
-                report["start_time"], percent
-            )
-            format += " | [{:s} / {:s}]".format(elapsed_str, remaining_str)
-
         ret = format.format(
             percent=percent,
             bar=bar,
diff --git a/atpbar/presentation/base.py b/atpbar/presentation/base.py
index 343bf7a..cdd348a 100755
--- a/atpbar/presentation/base.py
+++ b/atpbar/presentation/base.py
@@ -107,27 +107,6 @@ def _need_to_present(self) -> bool:
 
         return False
 
-    def _get_time_track(self, start_time, percent):
-        """Format seconds as hours, minutes and seconds."""
-        time_elapsed = time.time() - start_time
-        time_remaining = (
-            (time_elapsed * (100 / percent)) - time_elapsed if percent > 0 else 0
-        )
-
-        return self._time_to_str(time_elapsed), self._time_to_str(time_remaining)
-
-    def _time_to_str(self, t):
-        mins = t // 60
-        s = int(t % 60)
-
-        h = int(mins // 60)
-        m = int(mins % 60)
-
-        if h:
-            return "{0:d}:{1:02d}:{2:02d}".format(h, m, s)
-        else:
-            return "{0:02d}:{1:02d}".format(m, s)
-
     def stdout_write(self, s: str) -> None:
         with self.lock:
             self._stdout_write(s)
diff --git a/tests/presentation/test_presentation.py b/tests/presentation/test_presentation.py
index 7e15a62..46f1e1d 100644
--- a/tests/presentation/test_presentation.py
+++ b/tests/presentation/test_presentation.py
@@ -1,5 +1,3 @@
-import time
-
 import pytest
 
 has_jupyter_notebook = False
@@ -48,7 +46,6 @@ def test_presentation(Class):
 
 @pytest.mark.parametrize("Class", classes, ids=classe_ids)
 def test_time_track(Class):
-    start_time = time.time()
     obj = Class()
     repr(obj)
     obj.active()
@@ -60,7 +57,6 @@ def test_time_track(Class):
             taskid=1,
             first=True,
             last=False,
-            start_time=start_time,
         )
     )
     obj.present(
@@ -71,7 +67,6 @@ def test_time_track(Class):
             taskid=1,
             first=False,
             last=False,
-            start_time=start_time,
         )
     )
     obj.present(
@@ -82,7 +77,6 @@ def test_time_track(Class):
             taskid=1,
             first=False,
             last=True,
-            start_time=start_time,
         )
     )
     obj.active()