diff --git a/geomagio/edge/RawInputClient.py b/geomagio/edge/RawInputClient.py
index f50a93cd24ab445216232828e6cbacb740235c0b..7259c2798b40805e5534b90c0d8df61281e1f2af 100644
--- a/geomagio/edge/RawInputClient.py
+++ b/geomagio/edge/RawInputClient.py
@@ -6,6 +6,7 @@ import struct
 import sys
 from datetime import datetime
 from ..TimeseriesFactoryException import TimeseriesFactoryException
+import logging
 from obspy.core import UTCDateTime
 from time import sleep
 
@@ -425,12 +426,24 @@ class RawInputClient:
             secs: int
             usecs: int
         """
+        usecs = time.microsecond / 100000
+        # round microseconds to nearest microsecond(whole number)
+        rounded_usecs = int(round(usecs, 0))
+        # add warning to log if residual microsecond values are received
+        if rounded_usecs != usecs:
+            logging.warning(
+                "residual microsecond values encountered, rounding to nearest microsecond"
+            )
+        # in the case that microseconds rounds up, account for next second
+        if rounded_usecs == 10:
+            time += 1
+            rounded_usecs = 0
+        # establish rest of date
         yr = time.year
         doy = time.datetime.timetuple().tm_yday
         secs = time.hour * 3600 + time.minute * 60 + time.second
-        usecs = time.microsecond
 
-        return (yr, doy, secs, usecs)
+        return (yr, doy, secs, rounded_usecs)
 
     def _open_socket(self):
         """Open a socket
diff --git a/test/edge_test/RawInputClient_test.py b/test/edge_test/RawInputClient_test.py
index 850f1a7dfff04cc18d0dc45ffc860d334ba36bd8..5996fd79ef0e665b15f59a94088385c3e85b1205 100644
--- a/test/edge_test/RawInputClient_test.py
+++ b/test/edge_test/RawInputClient_test.py
@@ -1,6 +1,8 @@
 """Tests for RawInputClient.py"""
 
 import numpy
+from datetime import datetime
+import logging
 from obspy.core import Stats, Trace, UTCDateTime
 from geomagio.edge import EdgeFactory, RawInputClient
 from numpy.testing import assert_equal
@@ -56,7 +58,7 @@ def test_raw_input_client():
 
 
 def test__get_tag():
-    """edge_test.RawInputClient_test.test_raw_input_client()"""
+    """edge_test.RawInputClient_test.test__get_tag()"""
     network = "NT"
     station = "BOU"
     channel = "MVH"
@@ -72,3 +74,36 @@ def test__get_tag():
     )
     tag_send = client._get_tag()
     assert_equal(tag_send is not None, True)
+
+
+def test__get_time_values(caplog):
+    """edge_test.RawInputClient_test.test__get_time_values()"""
+    network = "NT"
+    station = "BOU"
+    channel = "MVH"
+    location = "R0"
+    client = MockRawInputClient(
+        tag="tag",
+        host="host",
+        port="port",
+        station=station,
+        channel=channel,
+        location=location,
+        network=network,
+    )
+    # define expected date from _get_time_values
+    expected_time = UTCDateTime(2020, 10, 7, 0, 0, 0, 0)
+    # define date with residual microseconds
+    residual_time = UTCDateTime(2020, 10, 6, 23, 59, 59, 999999)
+    r_yr, r_doy, r_secs, r_usecs = client._get_time_values(residual_time)
+    # check if input microsecond value changes within function
+    assert_equal(
+        caplog.text,
+        "WARNING  root:RawInputClient.py:434 residual microsecond values encountered, rounding to nearest microsecond\n",
+    )
+    e_yr, e_doy, e_secs, e_usecs = client._get_time_values(expected_time)
+    # test if residual result matches expected result
+    assert_equal(e_yr, r_yr)
+    assert_equal(e_doy, r_doy)
+    assert_equal(e_secs, r_secs)
+    assert_equal(e_usecs, r_usecs)