diff --git a/crates/nu-std/tests/test_dt.nu b/crates/nu-std/tests/test_dt.nu
index 137d7538b1..ca132f35e3 100644
--- a/crates/nu-std/tests/test_dt.nu
+++ b/crates/nu-std/tests/test_dt.nu
@@ -34,6 +34,13 @@ def earlier_arg_must_be_less_or_equal_later [] {
     assert error {|| (datetime-diff $t1 $t2)} 
 }
 
+@test
+def banner_math_with_ms_us_ns [] {
+    let t1 = 2023-05-07T04:08:45.582926123+12:00
+    let t2 = 2019-05-10T09:59:12.967486456-07:00
+    assert equal (datetime-diff $t1 $t2) ({year:3, month:11, day:26, hour:23, minute:9, second:32, millisecond:615, microsecond:439 nanosecond:667})
+}
+
 @test
 def pp_skips_zeros [] {
     assert equal (pretty-print-duration {year:1, month:0, day:0, hour:0, minute:0, second:0, millisecond:0, microsecond:0 nanosecond:0}) "1yr "