diff --git a/dvc/logger.py b/dvc/logger.py
index d1cf08e83..ce4a46c04 100644
--- a/dvc/logger.py
+++ b/dvc/logger.py
@@ -59,12 +59,28 @@ class ColorFormatter(logging.Formatter):
     def format(self, record):
         msg = record.msg.format(*record.args) if record.args else record.msg
         exception, stack_trace = self._parse_exc(record)
-        return ("{prefix}{description}{stack_trace}").format(
+        return ("{asctime}{prefix}{description}{stack_trace}").format(
+            asctime=self.formatTime(record, self.datefmt),
             prefix=self._prefix(record),
             description=self._description(msg, exception),
             stack_trace=stack_trace,
         )
 
+    def formatTime(self, record, datefmt=None):
+        # only show if current level is set to DEBUG
+        # also, skip INFO as it is used for UI
+        if (
+            self._current_level() != logging.DEBUG
+            or record.levelno == logging.INFO
+        ):
+            return ""
+
+        return "{color}{date}{nc} ".format(
+            color=colorama.Fore.GREEN,
+            date=super().formatTime(record, datefmt),
+            nc=colorama.Fore.RESET,
+        )
+
     def _prefix(self, record):
         if record.levelname == "INFO":
             return ""

loggers: include timestamp to see how long operation takes
In logger output (mostly `dvc command -v`) we need to add time to see operation differences, see how long it took overall, etc. It's very valuable information.

diff --git a/tests/unit/test_logger.py b/tests/unit/test_logger.py
index 1b7d906e1..83f3c7d43 100644
--- a/tests/unit/test_logger.py
+++ b/tests/unit/test_logger.py
@@ -4,6 +4,10 @@ import traceback
 import colorama
 
 import dvc.logger
+import time
+from datetime import datetime
+import pytest
+
 from dvc.exceptions import DvcException
 
 
@@ -11,18 +15,29 @@ logger = logging.getLogger("dvc")
 formatter = dvc.logger.ColorFormatter()
 colors = {
     "blue": colorama.Fore.BLUE,
+    "green": colorama.Fore.GREEN,
     "red": colorama.Fore.RED,
     "yellow": colorama.Fore.YELLOW,
     "nc": colorama.Fore.RESET,
 }
 
 
+@pytest.fixture()
+def dt(mocker):
+    with mocker.patch(
+        "time.time", return_value=time.mktime(datetime(2020, 2, 2).timetuple())
+    ):
+        yield "2020-02-02 00:00:00,000"
+
+
 class TestColorFormatter:
-    def test_debug(self, caplog):
+    def test_debug(self, caplog, dt):
         with caplog.at_level(logging.DEBUG, logger="dvc"):
             logger.debug("message")
 
-            expected = "{blue}DEBUG{nc}: message".format(**colors)
+            expected = "{green}{datetime}{nc} {blue}DEBUG{nc}: message".format(
+                **colors, datetime=dt
+            )
 
             assert expected == formatter.format(caplog.records[0])
 
@@ -81,7 +96,7 @@ class TestColorFormatter:
 
             assert expected == formatter.format(caplog.records[0])
 
-    def test_exception_under_verbose(self, caplog):
+    def test_exception_under_verbose(self, caplog, dt):
         with caplog.at_level(logging.DEBUG, logger="dvc"):
             try:
                 raise Exception("description")
@@ -90,17 +105,21 @@ class TestColorFormatter:
                 logger.exception("")
 
             expected = (
+                "{green}{datetime}{nc} "
                 "{red}ERROR{nc}: description\n"
                 "{red}{line}{nc}\n"
                 "{stack_trace}"
                 "{red}{line}{nc}".format(
-                    line="-" * 60, stack_trace=stack_trace, **colors
+                    line="-" * 60,
+                    stack_trace=stack_trace,
+                    **colors,
+                    datetime=dt
                 )
             )
 
             assert expected == formatter.format(caplog.records[0])
 
-    def test_tb_only(self, caplog):
+    def test_tb_only(self, caplog, dt):
         with caplog.at_level(logging.DEBUG, logger="dvc"):
             try:
                 raise Exception("description")
@@ -109,17 +128,21 @@ class TestColorFormatter:
                 logger.exception("something", extra={"tb_only": True})
 
             expected = (
+                "{green}{datetime}{nc} "
                 "{red}ERROR{nc}: something\n"
                 "{red}{line}{nc}\n"
                 "{stack_trace}"
                 "{red}{line}{nc}".format(
-                    line="-" * 60, stack_trace=stack_trace, **colors
+                    line="-" * 60,
+                    stack_trace=stack_trace,
+                    **colors,
+                    datetime=dt
                 )
             )
 
             assert expected == formatter.format(caplog.records[0])
 
-    def test_nested_exceptions(self, caplog):
+    def test_nested_exceptions(self, caplog, dt):
         with caplog.at_level(logging.DEBUG, logger="dvc"):
             try:
                 raise Exception("first")
@@ -131,11 +154,15 @@ class TestColorFormatter:
                     logger.exception("message")
 
             expected = (
+                "{green}{datetime}{nc} "
                 "{red}ERROR{nc}: message - second: first\n"
                 "{red}{line}{nc}\n"
                 "{stack_trace}"
                 "{red}{line}{nc}".format(
-                    line="-" * 60, stack_trace=stack_trace, **colors
+                    line="-" * 60,
+                    stack_trace=stack_trace,
+                    **colors,
+                    datetime=dt
                 )
             )
             assert expected == formatter.format(caplog.records[0])
@@ -179,3 +206,21 @@ def test_handlers():
     assert out.level == logging.INFO
     assert deb.level == logging.DEBUG
     assert err.level == logging.WARNING
+
+
+def test_logging_debug_with_datetime(caplog, dt):
+    with caplog.at_level(logging.DEBUG, logger="dvc"):
+        logger.warning("WARNING")
+        logger.debug("DEBUG")
+        logger.error("ERROR")
+
+        for record in caplog.records:
+            assert dt in formatter.format(record)
+            assert record.levelname == record.message
+
+
+def test_info_with_debug_loglevel_shows_no_datetime(caplog, dt):
+    with caplog.at_level(logging.DEBUG, logger="dvc"):
+        logger.info("message")
+
+        assert "message" == formatter.format(caplog.records[0])

pip install -e .[all]
parse_log_pytest
pytest
pytest pytest-timeout pytest-cov pytest-xdist pytest-mock flaky mock xmltodict awscli google-compute-engine Pygments collective.checkdocs flake8 psutil flake8-docstrings pydocstyle jaraco.windows mock-ssh-server moto rangehttpserver
apt-get update apt-get install -y gcc
3.7
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
aliyun-python-sdk-core==2.16.0
aliyun-python-sdk-core-v3==2.13.33
aliyun-python-sdk-kms==2.16.5
appdirs==1.4.4
atpublic==3.1.2
attrs @ file:///croot/attrs_1668696182826/work
autocommand==2.2.2
awscli==1.31.13
azure-common==1.1.28
azure-storage-blob==2.1.0
azure-storage-common==2.1.0
bcrypt==4.2.1
boto==2.49.0
boto3==1.33.13
botocore==1.33.13
cachetools==4.2.4
certifi @ file:///croot/certifi_1671487769961/work/certifi
cffi==1.15.1
charset-normalizer==3.4.1
collective.checkdocs==0.2
colorama==0.4.4
configobj==5.0.9
coverage==7.2.7
crcmod==1.7
cryptography==44.0.2
decorator==5.1.1
distro==1.9.0
docutils==0.16
-e git+https://github.com/iterative/dvc.git@0c877710641ff235cde67e98f53861d0cf9d42b3#egg=dvc
execnet==2.0.2
flake8==5.0.4
flake8-docstrings==1.7.0
flaky==3.8.1
flatten-json==0.1.14
flit_core @ file:///opt/conda/conda-bld/flit-core_1644941570762/work/source/flit_core
flufl.lock==7.1.1
funcy==2.0
future==1.0.0
gitdb==4.0.12
gitdb2==4.0.2
GitPython==3.1.44
google-api-core==2.10.2
google-api-python-client==2.166.0
google-auth==1.35.0
google-auth-httplib2==0.2.0
google-cloud-core==1.7.3
google-cloud-storage==1.19.0
google-compute-engine==2.8.13
google-crc32c==1.5.0
google-resumable-media==2.7.2
googleapis-common-protos==1.69.2
grandalf==0.6
httplib2==0.22.0
humanize==4.6.0
idna==3.10
importlib-metadata==4.2.0
importlib-resources==5.12.0
inflect==3.0.2
iniconfig @ file:///home/linux1/recipes/ci/iniconfig_1610983019677/work
jaraco.classes==3.2.3
jaraco.collections==4.2.0
jaraco.context==4.3.0
jaraco.functools==3.7.0
jaraco.structures==2.1.0
jaraco.text==3.11.1
jaraco.ui==2.3.0
jaraco.windows==5.7.0
Jinja2==3.1.6
jmespath==0.10.0
jsonpath-ng==1.7.0
MarkupSafe==2.1.5
mccabe==0.7.0
mock==5.2.0
mock-ssh-server==0.9.1
more-itertools==9.1.0
moto==4.2.14
nanotime==0.5.2
networkx==2.3
numpy==1.21.6
oauth2client==4.1.3
oss2==2.6.1
packaging @ file:///croot/packaging_1671697413597/work
paramiko==3.5.1
path==16.6.0
pathspec==0.11.2
pluggy @ file:///tmp/build/80754af9/pluggy_1648042572264/work
ply==3.11
protobuf==4.24.4
psutil==7.0.0
py @ file:///opt/conda/conda-bld/py_1644396412707/work
pyarrow==0.15.1
pyasn1==0.5.1
pyasn1-modules==0.3.0
pycodestyle==2.9.1
pycparser==2.21
pycryptodome==3.22.0
pydantic==1.10.21
pydocstyle==6.3.0
pydot==2.0.0
PyDrive2==1.15.4
pyfastcopy==1.0.3
pyflakes==2.5.0
Pygments==2.17.2
PyNaCl==1.5.0
pyOpenSSL==25.0.0
pyparsing==3.1.4
pytest==7.1.2
pytest-cov==4.1.0
pytest-mock==3.11.1
pytest-timeout==2.3.1
pytest-xdist==3.5.0
python-dateutil==2.8.0
PyYAML==5.1.2
rangehttpserver==1.4.0
requests==2.31.0
responses==0.23.3
rsa==4.7.2
ruamel.yaml==0.18.10
ruamel.yaml.clib==0.2.8
s3transfer==0.8.2
shortuuid==1.0.13
six==1.17.0
smmap==5.0.2
snowballstemmer==2.2.0
speedcopy==2.1.5
texttable==1.7.0
tomli @ file:///opt/conda/conda-bld/tomli_1657175507142/work
tqdm==4.67.1
treelib==1.7.1
types-PyYAML==6.0.12.12
typing_extensions @ file:///croot/typing_extensions_1669924550328/work
uritemplate==4.1.1
urllib3==1.26.20
voluptuous==0.14.1
Werkzeug==2.2.3
xmltodict==0.14.2
zc.lockfile==3.0.post1
zipp @ file:///croot/zipp_1672387121353/work

name: dvc
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - attrs=22.1.0=py37h06a4308_0
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - flit-core=3.6.0=pyhd3eb1b0_0
  - importlib_metadata=4.11.3=hd3eb1b0_0
  - iniconfig=1.1.1=pyhd3eb1b0_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - packaging=22.0=py37h06a4308_0
  - pip=22.3.1=py37h06a4308_0
  - pluggy=1.0.0=py37h06a4308_1
  - py=1.11.0=pyhd3eb1b0_0
  - pytest=7.1.2=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tomli=2.0.1=py37h06a4308_0
  - typing_extensions=4.4.0=py37h06a4308_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zipp=3.11.0=py37h06a4308_0
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - aliyun-python-sdk-core==2.16.0
      - aliyun-python-sdk-core-v3==2.13.33
      - aliyun-python-sdk-kms==2.16.5
      - appdirs==1.4.4
      - atpublic==3.1.2
      - autocommand==2.2.2
      - awscli==1.31.13
      - azure-common==1.1.28
      - azure-storage-blob==2.1.0
      - azure-storage-common==2.1.0
      - bcrypt==4.2.1
      - boto==2.49.0
      - boto3==1.33.13
      - botocore==1.33.13
      - cachetools==4.2.4
      - cffi==1.15.1
      - charset-normalizer==3.4.1
      - collective-checkdocs==0.2
      - colorama==0.4.4
      - configobj==5.0.9
      - coverage==7.2.7
      - crcmod==1.7
      - cryptography==44.0.2
      - decorator==5.1.1
      - distro==1.9.0
      - docutils==0.16
      - dvc==0.84.0+0c8777
      - execnet==2.0.2
      - flake8==5.0.4
      - flake8-docstrings==1.7.0
      - flaky==3.8.1
      - flatten-json==0.1.14
      - flufl-lock==7.1.1
      - funcy==2.0
      - future==1.0.0
      - gitdb==4.0.12
      - gitdb2==4.0.2
      - gitpython==3.1.44
      - google-api-core==2.10.2
      - google-api-python-client==2.166.0
      - google-auth==1.35.0
      - google-auth-httplib2==0.2.0
      - google-cloud-core==1.7.3
      - google-cloud-storage==1.19.0
      - google-compute-engine==2.8.13
      - google-crc32c==1.5.0
      - google-resumable-media==2.7.2
      - googleapis-common-protos==1.69.2
      - grandalf==0.6
      - httplib2==0.22.0
      - humanize==4.6.0
      - idna==3.10
      - importlib-metadata==4.2.0
      - importlib-resources==5.12.0
      - inflect==3.0.2
      - jaraco-classes==3.2.3
      - jaraco-collections==4.2.0
      - jaraco-context==4.3.0
      - jaraco-functools==3.7.0
      - jaraco-structures==2.1.0
      - jaraco-text==3.11.1
      - jaraco-ui==2.3.0
      - jaraco-windows==5.7.0
      - jinja2==3.1.6
      - jmespath==0.10.0
      - jsonpath-ng==1.7.0
      - markupsafe==2.1.5
      - mccabe==0.7.0
      - mock==5.2.0
      - mock-ssh-server==0.9.1
      - more-itertools==9.1.0
      - moto==4.2.14
      - nanotime==0.5.2
      - networkx==2.3
      - numpy==1.21.6
      - oauth2client==4.1.3
      - oss2==2.6.1
      - paramiko==3.5.1
      - path==16.6.0
      - pathspec==0.11.2
      - ply==3.11
      - protobuf==4.24.4
      - psutil==7.0.0
      - pyarrow==0.15.1
      - pyasn1==0.5.1
      - pyasn1-modules==0.3.0
      - pycodestyle==2.9.1
      - pycparser==2.21
      - pycryptodome==3.22.0
      - pydantic==1.10.21
      - pydocstyle==6.3.0
      - pydot==2.0.0
      - pydrive2==1.15.4
      - pyfastcopy==1.0.3
      - pyflakes==2.5.0
      - pygments==2.17.2
      - pynacl==1.5.0
      - pyopenssl==25.0.0
      - pyparsing==3.1.4
      - pytest-cov==4.1.0
      - pytest-mock==3.11.1
      - pytest-timeout==2.3.1
      - pytest-xdist==3.5.0
      - python-dateutil==2.8.0
      - pyyaml==5.1.2
      - rangehttpserver==1.4.0
      - requests==2.31.0
      - responses==0.23.3
      - rsa==4.7.2
      - ruamel-yaml==0.18.10
      - ruamel-yaml-clib==0.2.8
      - s3transfer==0.8.2
      - shortuuid==1.0.13
      - six==1.17.0
      - smmap==5.0.2
      - snowballstemmer==2.2.0
      - speedcopy==2.1.5
      - texttable==1.7.0
      - tqdm==4.67.1
      - treelib==1.7.1
      - types-pyyaml==6.0.12.12
      - uritemplate==4.1.1
      - urllib3==1.26.20
      - voluptuous==0.14.1
      - werkzeug==2.2.3
      - xmltodict==0.14.2
      - zc-lockfile==3.0.post1
prefix: /opt/conda/envs/dvc

tests/unit/test_logger.py::TestColorFormatter::test_debug tests/unit/test_logger.py::TestColorFormatter::test_exception_under_verbose tests/unit/test_logger.py::TestColorFormatter::test_tb_only tests/unit/test_logger.py::TestColorFormatter::test_nested_exceptions tests/unit/test_logger.py::test_logging_debug_with_datetime
tests/unit/test_logger.py::TestColorFormatter::test_info tests/unit/test_logger.py::TestColorFormatter::test_warning tests/unit/test_logger.py::TestColorFormatter::test_error tests/unit/test_logger.py::TestColorFormatter::test_exception tests/unit/test_logger.py::TestColorFormatter::test_exception_with_description_and_without_message tests/unit/test_logger.py::TestColorFormatter::test_exception_with_description_and_message tests/unit/test_logger.py::TestColorFormatter::test_progress_awareness tests/unit/test_logger.py::test_handlers tests/unit/test_logger.py::test_info_with_debug_loglevel_shows_no_datetime
dvc/logger.py
dvc/logger.py