diff --git a/helpers/timeutils.test.js b/helpers/timeutils.test.js
new file mode 100644
index 00000000..7ff2c843
--- /dev/null
+++ b/helpers/timeutils.test.js
@@ -0,0 +1,56 @@
+const { relativeString, relativeColor, durationString } = require('./timeutils.js');
+
+describe('timeutils relativeString, relativeColor, durationString', () => {
+
+	const relativeStringCases = [
+		{ in: { start: new Date('2022-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: 'Now'},
+		{ in: { start: new Date('2022-04-07T08:01:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '1 minute ago'},
+		{ in: { start: new Date('2022-04-07T08:01:29.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '1 minute ago'},
+		{ in: { start: new Date('2022-04-07T08:01:30.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '2 minutes ago'},
+		{ in: { start: new Date('2022-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:02:00.000Z') }, out: '2 minutes from now'},
+		{ in: { start: new Date('2022-04-07T11:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '3 hours ago'},
+		{ in: { start: new Date('2022-04-10T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '3 days ago'},
+		{ in: { start: new Date('2022-04-28T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '3 weeks ago'},
+		{ in: { start: new Date('2022-07-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '3 months ago'},
+		{ in: { start: new Date('2022-07-08T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '3 months ago'},
+		{ in: { start: new Date('2022-07-25T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '4 months ago'},
+		{ in: { start: new Date('2023-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '1 year ago'},
+		{ in: { start: new Date('2032-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '10 years ago'},
+		{ in: { start: new Date('2132-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '110 years ago'},
+		{ in: { end: new Date('2132-04-07T08:00:00.000Z'), start: new Date('2022-04-07T08:00:00.000Z') }, out: '110 years from now'},
+	];
+	for(let i in relativeStringCases) {
+		test(`relativeString should output ${relativeStringCases[i].out} for an input of ${relativeStringCases[i].in}`, () => {
+			expect(relativeString(relativeStringCases[i].in.start, relativeStringCases[i].in.end)).toStrictEqual(relativeStringCases[i].out);
+		});
+	}
+
+	const relativeColorCases = [
+		{ in: { start: new Date('2022-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '#0098ff'},
+		{ in: { start: new Date('2022-04-10T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '#d9aa00'},
+		{ in: { start: new Date('2023-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '#000000'},
+		{ in: { start: new Date('2032-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '#000000'},
+		{ in: { start: new Date('2132-04-07T08:00:00.000Z'), end: new Date('2022-04-07T08:00:00.000Z') }, out: '#000000'},
+		{ in: { end: new Date('2132-04-07T08:00:00.000Z'), start: new Date('2022-04-07T08:00:00.000Z') }, out: '#0098ff'},
+	];
+	for(let i in relativeColorCases) {
+		test(`relativeColor should output ${relativeColorCases[i].out} for an input of ${relativeColorCases[i].in}`, () => {
+			expect(relativeColor(relativeColorCases[i].in.start, relativeColorCases[i].in.end)).toStrictEqual(relativeColorCases[i].out);
+		});
+	}
+
+	const durationStringCases = [
+		{ in: 0*1000, out: '00:00' },
+		{ in: 10*1000, out: '00:10' },
+		{ in: 100*1000, out: '01:40' },
+		{ in: 121*1000, out: '02:01' },
+		{ in: 2*60*60*1000, out: '02:00:00' },
+		{ in: 999*60*60*1000, out: '999:00:00' },
+	];
+	for(let i in durationStringCases) {
+		test(`durationString should output ${durationStringCases[i].out} for an input of ${durationStringCases[i].in}`, () => {
+			expect(durationString(durationStringCases[i].in)).toStrictEqual(durationStringCases[i].out);
+		});
+	}
+
+});