diff --git a/package-lock.json b/package-lock.json
index f889452e..222ed686 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -63,6 +63,9 @@
         "tsx": "^3.13.0",
         "unzipit": "^1.4.0",
         "wildcard-match": "^5.1.2"
+      },
+      "devDependencies": {
+        "run-script-os": "^1.1.6"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {
@@ -7326,6 +7329,16 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "node_modules/run-script-os": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/run-script-os/-/run-script-os-1.1.6.tgz",
+      "integrity": "sha512-ql6P2LzhBTTDfzKts+Qo4H94VUKpxKDFz6QxxwaUZN0mwvi7L3lpOI7BqPCq7lgDh3XLl0dpeXwfcVIitlrYrw==",
+      "dev": true,
+      "bin": {
+        "run-os": "index.js",
+        "run-script-os": "index.js"
+      }
+    },
     "node_modules/rxjs": {
       "version": "7.8.1",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
@@ -13748,6 +13761,12 @@
         "queue-microtask": "^1.2.2"
       }
     },
+    "run-script-os": {
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/run-script-os/-/run-script-os-1.1.6.tgz",
+      "integrity": "sha512-ql6P2LzhBTTDfzKts+Qo4H94VUKpxKDFz6QxxwaUZN0mwvi7L3lpOI7BqPCq7lgDh3XLl0dpeXwfcVIitlrYrw==",
+      "dev": true
+    },
     "rxjs": {
       "version": "7.8.1",
       "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
diff --git a/package.json b/package.json
index 24758d6a..9f64fbbc 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,9 @@
     "grab": "npx tsx scripts/commands/epg/grab.ts",
     "serve": "npx serve",
     "lint": "npx eslint ./scripts/**/*.ts ./sites/**/*.js ./tests/**/*.ts ./tests/**/*.js",
-    "test": "TZ=Pacific/Nauru npx jest --runInBand",
+    "test": "run-script-os",
+    "test:win32": "SET TZ=Pacific/Nauru && npx jest --runInBand",
+    "test:default": "TZ=Pacific/Nauru npx jest --runInBand",
     "postinstall": "npm run api:load"
   },
   "private": true,
@@ -77,5 +79,8 @@
     "tsx": "^3.13.0",
     "unzipit": "^1.4.0",
     "wildcard-match": "^5.1.2"
+  },
+  "devDependencies": {
+    "run-script-os": "^1.1.6"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 1c01ae6c..62e54274 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4363,6 +4363,11 @@ run-parallel@^1.1.9:
   dependencies:
     queue-microtask "^1.2.2"
 
+run-script-os@^1.1.6:
+  version "1.1.6"
+  resolved "https://registry.npmjs.org/run-script-os/-/run-script-os-1.1.6.tgz"
+  integrity sha512-ql6P2LzhBTTDfzKts+Qo4H94VUKpxKDFz6QxxwaUZN0mwvi7L3lpOI7BqPCq7lgDh3XLl0dpeXwfcVIitlrYrw==
+
 rxjs@^7.2.0, rxjs@^7.5.5:
   version "7.8.1"
   resolved "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz"