diff --git a/src/shared/format-date.ts b/src/shared/format-date.ts
index 47f8353..4ad6eec 100644
--- a/src/shared/format-date.ts
+++ b/src/shared/format-date.ts
@@ -1,5 +1,7 @@
 import type { ISODate } from './types/date'
 
+const isDevelopment = () => process.env.NODE_ENV === 'development'
+
 export const formatDate = (date: Date | string) =>
   new Date(date).toLocaleString()
 
@@ -15,6 +17,5 @@ export const formatLongDate = (date: Date | ISODate) =>
 
 export const formatDiffInMinutes = (date1: ISODate, date2: ISODate) => {
   const diffInMs = new Date(date2).getTime() - new Date(date1).getTime()
-  // TODO: diff in minutes not in seconds
-  return Math.max(0, Math.round(diffInMs / 1000))
+  return Math.max(0, Math.round(diffInMs / (1000 * (isDevelopment() ? 1 : 60))))
 }