diff --git a/pysat/tests/test_instrument.py b/pysat/tests/test_instrument.py
index <HASH>..<HASH> 100644
--- a/pysat/tests/test_instrument.py
+++ b/pysat/tests/test_instrument.py
@@ -63,7 +63,7 @@ class TestBasics():
         self.out = self.testInst.index[-1]
         # 10 seconds per file
         assert(self.out == self.ref_time + pds.DateOffset(days=1)
-               + pds.DateOffset(seconds=10))
+               + pds.DateOffset(seconds=9))
 
     def test_basic_instrument_bad_keyword(self):
         """Checks for error when instantiating with bad load_rtn keywords"""
@@ -125,7 +125,7 @@ class TestBasics():
         assert (self.out == self.testInst.date)
         self.out = self.testInst.index[-1]
         assert(self.out == self.ref_time + pds.DateOffset(days=1)
-               + pds.DateOffset(seconds=10))
+               + pds.DateOffset(seconds=9))
 
     def test_basic_instrument_load_by_date_with_extra_time(self):
         # put in a date that has more than year, month, day
BUG: updated time check, multi-load-days