diff --git a/package-lock.json b/package-lock.json
index 127bdca..acbc4d9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,6 @@
         "email-validator": "^2.0.4",
         "gradle-to-js": "2.0.1",
         "jsonwebtoken": "^9.0.2",
-        "moment": "^2.29.4",
         "opener": "^1.5.2",
         "parse-duration": "^2.1.6",
         "plist": "^3.1.0",
@@ -2569,15 +2568,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/moment": {
-      "version": "2.31.0",
-      "resolved": "https://registry.npmjs.org/moment/-/moment-2.31.0.tgz",
-      "integrity": "sha512-0acOTfMiWOheYS4eoWb80yYMb/JLvVv9SHbs2PehaDzfUG0Bw855SKyk0IKTnPGa5+U2bmi3W68l1+sGLX/pvw==",
-      "license": "MIT",
-      "engines": {
-        "node": "*"
-      }
-    },
     "node_modules/mute-stream": {
       "version": "0.0.8",
       "resolved": "https://registry.npmjs.org/mute-stream/-/mute-stream-0.0.8.tgz",
diff --git a/package.json b/package.json
index eb9e0e7..0c04468 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,6 @@
     "email-validator": "^2.0.4",
     "gradle-to-js": "2.0.1",
     "jsonwebtoken": "^9.0.2",
-    "moment": "^2.29.4",
     "opener": "^1.5.2",
     "parse-duration": "^2.1.6",
     "plist": "^3.1.0",
diff --git a/script/command-executor.ts b/script/command-executor.ts
index 27d9cdd..181fd5e 100644
--- a/script/command-executor.ts
+++ b/script/command-executor.ts
@@ -7,7 +7,6 @@ const childProcess = require("child_process");
 import debugCommand from "./commands/debug";
 import * as fs from "fs";
 import * as chalk from "chalk";
-import * as moment from "moment";
 import * as os from "os";
 import * as path from "path";
 import * as semver from "semver";
@@ -153,7 +152,7 @@ async function accessKeyPatch(command: cli.IAccessKeyPatchCommand): Promise<void
   }
 
   if (willUpdateTtl) {
-    const expirationDate = moment(accessKey.expires).format("LLLL");
+    const expirationDate = new Date(accessKey.expires).toLocaleString("en-US", { dateStyle: "full", timeStyle: "short" });
     if (willUpdateName) {
       logMessage += ` and changed its expiration date to ${expirationDate}`;
     } else {
@@ -616,18 +615,6 @@ async function logout(_command: cli.ICommand): Promise<void> {
   deleteConnectionInfoCache();
 }
 
-function formatDate(unixOffset: number): string {
-  const date: moment.Moment = moment(unixOffset);
-  const now: moment.Moment = moment();
-  if (Math.abs(now.diff(date, "days")) < 30) {
-    return date.fromNow(); // "2 hours ago"
-  } else if (now.year() === date.year()) {
-    return date.format("MMM D"); // "Nov 6"
-  } else {
-    return date.format("MMM D, YYYY"); // "Nov 6, 2014"
-  }
-}
-
 function printAppList(format: string, apps: App[]): void {
   if (format === "json") {
     printJson(apps);
@@ -952,6 +939,31 @@ async function getAppVersionFromXcodeProject(
   return { appVersion: marketingVersion, buildNumber: String(currentProjectVersion) };
 }
 
+const relativeTimeFormat = new Intl.RelativeTimeFormat("en-US", { numeric: "auto" });
+const RELATIVE_TIME_UNITS: Array<[unit: Intl.RelativeTimeFormatUnit, ms: number]> = [
+  ["day", 24 * 60 * 60 * 1000],
+  ["hour", 60 * 60 * 1000],
+  ["minute", 60 * 1000],
+  ["second", 1000],
+];
+
+// "2 hours ago" within 30 days, otherwise "Nov 6" in the current year and "Nov 6, 2014" before it
+function formatDate(unixOffset: number): string {
+  if (!Number.isFinite(unixOffset)) {
+    return "";
+  }
+
+  const msFromNow: number = unixOffset - Date.now();
+  if (Math.abs(msFromNow) < 30 * RELATIVE_TIME_UNITS[0][1]) {
+    const [unit, ms] = RELATIVE_TIME_UNITS.find(([, ms]) => Math.abs(msFromNow) >= ms) ?? ["second", 1000];
+    return relativeTimeFormat.format(Math.round(msFromNow / ms), unit);
+  }
+
+  const date = new Date(unixOffset);
+  const year = date.getFullYear() === new Date().getFullYear() ? undefined : "numeric";
+  return date.toLocaleDateString("en-US", { month: "short", day: "numeric", year });
+}
+
 function printJson(object: any): void {
   log(JSON.stringify(object, /*replacer=*/ null, /*spacing=*/ 2));
 }
diff --git a/script/commands/debug.ts b/script/commands/debug.ts
index 4c556c1..a8880a5 100644
--- a/script/commands/debug.ts
+++ b/script/commands/debug.ts
@@ -3,7 +3,6 @@
 
 import * as childProcess from "child_process";
 import * as cli from "../../script/types/cli";
-import * as moment from "moment";
 import * as path from "path";
 
 const simctl = require("simctl");
@@ -111,7 +110,7 @@ function processLogData(logData: Buffer) {
       // log message prefix that is added to each entry.
       const message = line.substring(line.indexOf(logMessagePrefix) + logMessagePrefix.length);
 
-      const timeStamp = moment().format("hh:mm:ss");
+      const timeStamp = new Date().toLocaleTimeString("en-US", { hourCycle: "h23" });
       return `[${timeStamp}] ${message}`;
     })
     .forEach((line: string) => console.log(line));
diff --git a/test/cli.ts b/test/cli.ts
index aa8b636..026eed2 100644
--- a/test/cli.ts
+++ b/test/cli.ts
@@ -156,7 +156,7 @@ describe("CLI", () => {
       await execute(command);
 
       assertLoggedOnce(
-        'Successfully changed the expiration date of the "Test name" access key to Wednesday, August 17, 2016 12:07 PM.'
+        'Successfully changed the expiration date of the "Test name" access key to Wednesday, August 17, 2016 at 12:07 PM.'
       );
     });
 
@@ -171,7 +171,7 @@ describe("CLI", () => {
       await execute(command);
 
       assertLoggedOnce(
-        'Successfully renamed the access key "Test name" to "Updated name" and changed its expiration date to Wednesday, August 17, 2016 12:07 PM.'
+        'Successfully renamed the access key "Test name" to "Updated name" and changed its expiration date to Wednesday, August 17, 2016 at 12:07 PM.'
       );
     });