diff --git a/packages/tendermint-rpc/src/dates.spec.ts b/packages/tendermint-rpc/src/dates.spec.ts
index bacb724c..25862012 100644
--- a/packages/tendermint-rpc/src/dates.spec.ts
+++ b/packages/tendermint-rpc/src/dates.spec.ts
@@ -122,43 +122,43 @@ describe("dates", () => {
     it("works", () => {
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26Z");
-        expect(toSeconds(date)).toEqual([1608029846, 0]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 0 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.7Z");
-        expect(toSeconds(date)).toEqual([1608029846, 700000000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 700000000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.77Z");
-        expect(toSeconds(date)).toEqual([1608029846, 770000000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 770000000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.778Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778000000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778000000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.7789Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778900000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778900000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.77809Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778090000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778090000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.778009Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778009000]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778009000 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.7780009Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778000900]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778000900 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.77800009Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778000090]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778000090 });
       }
       {
         const date = fromRfc3339WithNanoseconds("2020-12-15T10:57:26.778000009Z");
-        expect(toSeconds(date)).toEqual([1608029846, 778000009]);
+        expect(toSeconds(date)).toEqual({ seconds: 1608029846, nanos: 778000009 });
       }
     });
   });
diff --git a/packages/tendermint-rpc/src/dates.ts b/packages/tendermint-rpc/src/dates.ts
index 1b4fae84..e6206b2e 100644
--- a/packages/tendermint-rpc/src/dates.ts
+++ b/packages/tendermint-rpc/src/dates.ts
@@ -43,10 +43,11 @@ export function fromSeconds(seconds: number, nanos = 0): DateWithNanoseconds {
  * [.google.protobuf.Timestamp](https://developers.google.com/protocol-buffers/docs/reference/google.protobuf#google.protobuf.Timestamp)
  * or any other system that does not use millisecond precision.
  */
-export function toSeconds(date: ReadonlyDateWithNanoseconds): [number, number] {
-  const seconds = Math.floor(date.getTime() / 1000);
-  const nanos = (date.getTime() % 1000) * 1000000 + (date.nanoseconds ?? 0);
-  return [seconds, nanos];
+export function toSeconds(date: ReadonlyDateWithNanoseconds): { seconds: number; nanos: number } {
+  return {
+    seconds: Math.floor(date.getTime() / 1000),
+    nanos: (date.getTime() % 1000) * 1000000 + (date.nanoseconds ?? 0),
+  };
 }
 
 /** @deprecated Use fromRfc3339WithNanoseconds/toRfc3339WithNanoseconds instead */