diff --git a/commands/events/calendar.js b/commands/events/calendar.js
index 3c56e9bd..58991cf9 100644
--- a/commands/events/calendar.js
+++ b/commands/events/calendar.js
@@ -36,7 +36,7 @@ module.exports = class CalendarCommand extends Command {
 			------------------------------------
 		`;
 		display += '\n';
-		const startDay = new Date(`${month}/1/${year}`).getDay();
+		const startDay = new Date(year, month - 1, 1).getDay();
 		for (let i = 0; i < startDay; i++) {
 			display += '     ';
 		}
diff --git a/commands/events/days-since.js b/commands/events/days-since.js
index 7f6e9edb..05a30109 100644
--- a/commands/events/days-since.js
+++ b/commands/events/days-since.js
@@ -34,7 +34,7 @@ module.exports = class DaysSinceCommand extends Command {
 
 	run(msg, { month, day, year }) {
 		const now = new Date();
-		const past = new Date(`${month}/${day}/${year}`);
+		const past = new Date(year, month - 1, day);
 		const pastFormat = moment.utc(past).format('dddd, MMMM Do, YYYY');
 		const time = moment.duration(now - past);
 		return msg.say(`There have been ${time.format('Y [years,] M [months and] d [days]')} since ${pastFormat}!`);
diff --git a/commands/events/days-until.js b/commands/events/days-until.js
index 63216fc3..8edc8bd8 100644
--- a/commands/events/days-until.js
+++ b/commands/events/days-until.js
@@ -31,7 +31,7 @@ module.exports = class DaysUntilCommand extends Command {
 		const now = new Date();
 		let year = now.getMonth() + 1 <= month ? now.getFullYear() : now.getFullYear() + 1;
 		if (month === now.getMonth() + 1 && now.getDate() >= day) ++year;
-		const future = new Date(`${month}/${day}/${year}`);
+		const future = new Date(year, month - 1, day);
 		const futureFormat = moment.utc(future).format('dddd, MMMM Do, YYYY');
 		const time = moment.duration(future - now);
 		const link = time.months() ? time.months() === 1 ? 'is' : 'are' : time.days() === 1 ? 'is' : 'are';