diff --git a/.husky/pre-commit b/.husky/pre-commit
new file mode 100644
index 0000000..bfe23ec
--- /dev/null
+++ b/.husky/pre-commit
@@ -0,0 +1 @@
+npm run typecheck && npm run test
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce306c2..2476f2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Version 0.1.9
+
+### Fixed
+
+- fix timezone for "today's transactions"
+
 ## Version 0.1.8
 
 ### Changed
diff --git a/README.md b/README.md
index 9524d67..a718ef7 100644
--- a/README.md
+++ b/README.md
@@ -18,36 +18,6 @@ Want to try HabitTrove before installing? Visit the public [demo instance](https
 - 🌙 Dark mode support (WIP)
 - 📲 Progressive Web App (PWA) support (Planned)
 
-## Getting Started
-
-### Prerequisites
-
-- Node.js 20 or later
-- npm package manager
-
-### Installation
-
-1. Clone the repository:
-
-```bash
-git clone https://github.com/dohsimpson/habittrove.git
-cd habittrove
-```
-
-2. Install dependencies:
-
-```bash
-npm install --force
-```
-
-3. Start the development server:
-
-```bash
-npm run dev
-```
-
-4. Open [http://localhost:3000](http://localhost:3000) with your browser to see the application.
-
 ## Usage
 
 1. **Creating Habits**: Click the "Add Habit" button to create a new habit. Set a name, description, and coin reward.
@@ -109,6 +79,73 @@ npm run docker-run
 
 The application data will be persisted in the `data` directory in both cases.
 
+## Building the Project
+
+To contribute to HabitTrove, you'll need to set up a development environment. Here's how to get started:
+
+### Prerequisites
+
+- Node.js 20 or later
+- npm package manager
+- Git (for version control)
+- bun (for running tests)
+
+### Setting Up the Development Environment
+
+1. Clone the repository and navigate to the project directory:
+
+```bash
+git clone https://github.com/dohsimpson/habittrove.git
+cd habittrove
+```
+
+2. Install project dependencies:
+
+```bash
+npm install --force
+```
+
+3. Set up the development environment:
+
+```bash
+npm run setup:dev
+```
+
+4. Start the development server:
+
+```bash
+npm run dev
+```
+
+5. Open [http://localhost:3000](http://localhost:3000) in your browser to access the development version.
+
+### Running Tests
+
+Before contributing, make sure to run the test suite:
+
+```bash
+npm test
+```
+
+### Building for Production
+
+To build the project for production:
+
+```bash
+npm run build
+```
+
+This will create an optimized production build in the `.next` directory.
+
+### Code Quality Tools
+
+The project uses several tools to maintain code quality:
+
+- ESLint for linting: `npm run lint`
+- TypeScript type checking: `npm run type-check`
+
+Run these commands regularly during development to catch issues early.
+
 ## Contributing
 
 Contributions are welcome! We appreciate both:
diff --git a/components/CoinsManager.tsx b/components/CoinsManager.tsx
index 31e2e89..81c9151 100644
--- a/components/CoinsManager.tsx
+++ b/components/CoinsManager.tsx
@@ -133,7 +133,7 @@ export default function CoinsManager() {
                 <div className="text-sm text-blue-800 dark:text-blue-100 mb-1">Today's Transactions</div>
                 <div className="text-2xl font-bold text-blue-900 dark:text-blue-50">
                   {transactions.filter(t =>
-                    isSameDate(getNow({}), t2d({ timestamp: t.timestamp }))
+                    isSameDate(getNow({ timezone: settings.system.timezone }), t2d({ timestamp: t.timestamp, timezone: settings.system.timezone }))
                   ).length} 📊
                 </div>
               </div>
diff --git a/lib/utils.test.ts b/lib/utils.test.ts
index 93032bf..6e19faf 100644
--- a/lib/utils.test.ts
+++ b/lib/utils.test.ts
@@ -53,7 +53,7 @@ describe('datetime utilities', () => {
     const testDateTime = DateTime.fromISO(testTimestamp);
 
     test('t2d should convert ISO timestamp to DateTime', () => {
-      const result = t2d({ timestamp: testTimestamp });
+      const result = t2d({ timestamp: testTimestamp, timezone: 'utc' });
       // Normalize both timestamps to handle different UTC offset formats (Z vs +00:00)
       expect(DateTime.fromISO(result.toISO()!).toMillis())
         .toBe(DateTime.fromISO(testTimestamp).toMillis())
@@ -65,10 +65,10 @@ describe('datetime utilities', () => {
     })
 
     test('d2s should format DateTime for display', () => {
-      const result = d2s({ dateTime: testDateTime });
+      const result = d2s({ dateTime: testDateTime, timezone: 'utc' });
       expect(result).toBeString()
-      
-      const customFormat = d2s({ dateTime: testDateTime, format: 'yyyy-MM-dd' });
+
+      const customFormat = d2s({ dateTime: testDateTime, format: 'yyyy-MM-dd', timezone: 'utc' });
       expect(customFormat).toBe('2024-01-01')
     })
 
diff --git a/lib/utils.ts b/lib/utils.ts
index f55faca..0ffec1a 100644
--- a/lib/utils.ts
+++ b/lib/utils.ts
@@ -24,7 +24,7 @@ export function getNowInMilliseconds() {
 }
 
 // iso timestamp to datetime object, most for storage read
-export function t2d({ timestamp, timezone }: { timestamp: string; timezone?: string }) {
+export function t2d({ timestamp, timezone }: { timestamp: string; timezone: string }) {
   return DateTime.fromISO(timestamp).setZone(timezone);
 }
 
diff --git a/package-lock.json b/package-lock.json
index 4e4e532..2e9c224 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "habittrove",
-  "version": "0.1.5",
+  "version": "0.1.8",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "habittrove",
-      "version": "0.1.5",
+      "version": "0.1.8",
       "dependencies": {
         "@next/font": "^14.2.15",
         "@radix-ui/react-dialog": "^1.1.4",
@@ -49,6 +49,7 @@
         "eslint": "^9",
         "eslint-config-next": "15.1.3",
         "eslint-plugin-unused-imports": "^4.1.4",
+        "husky": "^9.1.7",
         "postcss": "^8",
         "raw-loader": "^4.0.2",
         "tailwindcss": "^3.4.1",
@@ -4507,6 +4508,21 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/husky": {
+      "version": "9.1.7",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-9.1.7.tgz",
+      "integrity": "sha512-5gs5ytaNjBrh5Ow3zrvdUUY+0VxIuWVL4i9irt6friV+BqdCfmV11CQTWMiBYWHbXhco+J1kHfTOUkePhCDvMA==",
+      "dev": true,
+      "bin": {
+        "husky": "bin.js"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/typicode"
+      }
+    },
     "node_modules/ignore": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.2.tgz",
diff --git a/package.json b/package.json
index 8b2b332..6baed27 100644
--- a/package.json
+++ b/package.json
@@ -7,8 +7,12 @@
     "build": "next build",
     "start": "next start",
     "lint": "next lint",
+    "test": "bun test",
+    "typecheck": "tsc --noEmit",
     "docker-build": "docker build -t habittrove .",
-    "docker-run": "docker run -p 3000:3000 -v $(pwd)/data:/app/data habittrove"
+    "docker-run": "docker run -p 3000:3000 -v $(pwd)/data:/app/data habittrove",
+    "prepare": "husky",
+    "setup:dev": "if ! command -v bun > /dev/null; then echo 'Installing bun...'; curl -fsSL https://bun.sh/install | bash; fi && npm install --force && npm run typecheck && npm run lint"
   },
   "dependencies": {
     "@next/font": "^14.2.15",
@@ -52,6 +56,7 @@
     "eslint": "^9",
     "eslint-config-next": "15.1.3",
     "eslint-plugin-unused-imports": "^4.1.4",
+    "husky": "^9.1.7",
     "postcss": "^8",
     "raw-loader": "^4.0.2",
     "tailwindcss": "^3.4.1",