diff --git a/web/cashtab/scripts/test.js b/web/cashtab/scripts/test.js
index 4189e2cc4..9b71cf1e0 100644
--- a/web/cashtab/scripts/test.js
+++ b/web/cashtab/scripts/test.js
@@ -1,55 +1,56 @@
 'use strict';
 
 // Do this as the first thing so that any code reading it knows the right env.
 process.env.BABEL_ENV = 'test';
 process.env.NODE_ENV = 'test';
 process.env.LANG = 'en_US.UTF-8';
 process.env.PUBLIC_URL = '';
+process.env.TZ = 'UTC';
 
 // Makes the script crash on unhandled rejections instead of silently
 // ignoring them. In the future, promise rejections that are not handled will
 // terminate the Node.js process with a non-zero exit code.
 process.on('unhandledRejection', err => {
     throw err;
 });
 
 // Ensure environment variables are read.
 require('../config/env');
 
 const jest = require('jest');
 const execSync = require('child_process').execSync;
 let argv = process.argv.slice(2);
 
 // Update snapshots for CI and interactive
 argv.push('-u');
 
 function isInGitRepository() {
     try {
         execSync('git rev-parse --is-inside-work-tree', { stdio: 'ignore' });
         return true;
     } catch (e) {
         return false;
     }
 }
 
 function isInMercurialRepository() {
     try {
         execSync('hg --cwd . root', { stdio: 'ignore' });
         return true;
     } catch (e) {
         return false;
     }
 }
 
 // Watch unless on CI or explicitly running all tests
 if (
     !process.env.CI &&
     argv.indexOf('--watchAll') === -1 &&
     argv.indexOf('--watchAll=false') === -1
 ) {
     // https://github.com/facebook/create-react-app/issues/5210
     const hasSourceControl = isInGitRepository() || isInMercurialRepository();
     argv.push(hasSourceControl ? '--watch' : '--watchAll');
 }
 
 jest.run(argv);