diff --git a/.gitignore b/.gitignore
index b769d9a2..15a2f234 100644
--- a/.gitignore
+++ b/.gitignore
@@ -60,7 +60,7 @@ backend/app/api/static/public/*
 backend/api
 
 docs/.vitepress/cache/
-/.data/
+.data/
 
 # Playwright
 frontend/test-results/
diff --git a/frontend/composables/utils.ts b/frontend/composables/utils.ts
index 5b030164..7d964155 100644
--- a/frontend/composables/utils.ts
+++ b/frontend/composables/utils.ts
@@ -44,7 +44,7 @@ function clampDecimals(currency: string, decimals: number): number {
 }
 
 // Type guard to validate currency response shape with strict validation
-function isValidCurrencyItem(item: CurrenciesCurrency) {
+function isValidCurrencyItem(item: CurrenciesCurrency): boolean {
   if (
     typeof item !== "object" ||
     item === null ||
diff --git a/frontend/lib/datelib/datelib.test.ts b/frontend/lib/datelib/datelib.test.ts
index 34f96f9c..d80b2bdb 100644
--- a/frontend/lib/datelib/datelib.test.ts
+++ b/frontend/lib/datelib/datelib.test.ts
@@ -1,20 +1,9 @@
 import { describe, expect, test } from "vitest";
-import { factorRange, format, parse, zeroTime } from "./datelib";
-
-describe("format", () => {
-  test("should format a date as a string", () => {
-    const date = new Date(2020, 1, 1);
-    expect(format(date)).toBe("2020-02-01");
-  });
-
-  test("should return the string if a string is passed in", () => {
-    expect(format("2020-02-01")).toBe("2020-02-01");
-  });
-});
+import { factorRange, parse, zeroTime } from "./datelib";
 
 describe("zeroTime", () => {
   test("should zero out the time", () => {
-    const date = new Date(2020, 1, 1, 12, 30, 30);
+    const date = new Date(Date.UTC(2020, 1, 1, 12, 30, 30));
     const zeroed = zeroTime(date);
     expect(zeroed.getHours()).toBe(0);
     expect(zeroed.getMinutes()).toBe(0);
diff --git a/frontend/lib/datelib/datelib.ts b/frontend/lib/datelib/datelib.ts
index 33f7674d..fc7b7b27 100644
--- a/frontend/lib/datelib/datelib.ts
+++ b/frontend/lib/datelib/datelib.ts
@@ -1,19 +1,9 @@
 import { addDays } from "date-fns";
 
-/*
- * Formats a date as a string
- * */
-export function format(date: Date | string): string {
-  if (typeof date === "string") {
-    return date;
-  }
-  return date.toISOString().split("T")[0]!;
-}
-
 export function zeroTime(date: Date): Date {
-  return new Date(
-    new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime() - date.getTimezoneOffset() * 60000
-  );
+  const result = new Date(date.getTime());
+  result.setHours(0, 0, 0, 0);
+  return result;
 }
 
 export function factorRange(offset: number = 7): [Date, Date] {
diff --git a/frontend/package.json b/frontend/package.json
index be9d7b31..7c56e91f 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -9,7 +9,7 @@
     "lint:fix": "eslint --ext \".ts,.js,.vue\" --ignore-pattern \"components/ui\" . --fix",
     "lint:ci": "eslint --ext \".ts,.js,.vue\" --ignore-pattern \"components/ui\" . --max-warnings 1",
     "typecheck": "pnpm nuxi typecheck --noEmit",
-    "test:ci": "TEST_SHUTDOWN_API_SERVER=true vitest --run --config ./test/vitest.config.ts",
+    "test:ci": "TEST_SHUTDOWN_API_SERVER=true vitest --run --config ./test/vitest.config.ts --no-file-parallelism",
     "test:local": "TEST_SHUTDOWN_API_SERVER=false && vitest --run --config ./test/vitest.config.ts",
     "test:watch": " TEST_SHUTDOWN_API_SERVER=false vitest --config ./test/vitest.config.ts"
   },