fix: update day picker to handle utc display

frontend/src/helpers/datetime.ts

@@ -0,0 +1,24 @@
+import { format } from "date-fns";
+
+export enum Timezone {
+  Local = "local",
+  UTC = "UTC"
+}
+
+export const formatDateTime = ({
+  timezone,
+  timestamp,
+  dateFormat = "MMM do yyyy, hh:mm a"
+}: {
+  timestamp: string | Date;
+  timezone?: Timezone;
+  dateFormat?: string;
+}) => {
+  const date = new Date(timestamp);
+
+  if (timezone === Timezone.UTC) {
+    const utcDate = new Date(date.getTime() + date.getTimezoneOffset() * 60000);
+    return `${format(utcDate, dateFormat)} UTC`;
+  }
+  return format(date, dateFormat);
+};