Add error message for tz_localize

Author: Sumanau Sareen

pandas/_libs/tslibs/conversion.pyx

@@ -523,10 +523,14 @@ cdef inline check_overflows(_TSObject obj):
     # GH#12677
     if obj.dts.year == 1677:
         if not (obj.value < 0):
-            raise OutOfBoundsDatetime
+            raise OutOfBoundsDatetime(
+                f'Timestamp cannot be converted within implementation bounds'
+            )
     elif obj.dts.year == 2262:
         if not (obj.value > 0):
-            raise OutOfBoundsDatetime
+            raise OutOfBoundsDatetime(
+                f'Timestamp cannot be converted within implementation bounds'
+            )
 
 
 # ----------------------------------------------------------------------

pandas/tests/scalar/timestamp/test_timezones.py

@@ -25,6 +25,7 @@ def test_tz_localize_pushes_out_of_bounds(self):
         # GH#12677
         # tz_localize that pushes away from the boundary is OK
         pac = Timestamp.min.tz_localize("US/Pacific")
+        msg = "Timestamp cannot be converted within implementation bounds"
         assert pac.value > Timestamp.min.value
         pac.tz_convert("Asia/Tokyo")  # tz_convert doesn't change value
         with pytest.raises(OutOfBoundsDatetime, match=msg):