diff --git a/Application/Sources/Scene/SelfStudyTeacher/SelfStudyTeacherViewModel.swift b/Application/Sources/Scene/SelfStudyTeacher/SelfStudyTeacherViewModel.swift
index 38c6ecfa..6cdf5373 100644
--- a/Application/Sources/Scene/SelfStudyTeacher/SelfStudyTeacherViewModel.swift
+++ b/Application/Sources/Scene/SelfStudyTeacher/SelfStudyTeacherViewModel.swift
@@ -26,7 +26,7 @@ class SelfStudyTeacherViewModel: ObservableObject {
     private func calculateDateToShowData(allMenu: [TodaySelfStudyTeacherEntity]) -> Int {
         let today = Calendar.current.startOfDay(for: Date())
         return allMenu.firstIndex {
-            let day = $0.date.filter { Int(String($0)) != nil }[1...]
+            let day = $0.date.split(separator: "월")[1].filter { Int(String($0)) != nil }
             return Int(String(day)) ?? 0 >= Int(today.toString(format: "d")) ?? 0
         } ?? 0
     }