diff --git a/src/main/java/com/indayvidual/server/domain/calendar/dto/response/GetDayEventResponseDto.java b/src/main/java/com/indayvidual/server/domain/calendar/dto/response/GetDayEventResponseDto.java
index e3eb531..9325802 100644
--- a/src/main/java/com/indayvidual/server/domain/calendar/dto/response/GetDayEventResponseDto.java
+++ b/src/main/java/com/indayvidual/server/domain/calendar/dto/response/GetDayEventResponseDto.java
@@ -22,4 +22,6 @@ public class GetDayEventResponseDto {
     private String endTime;
 
     private String color;
+
+    private Boolean isAllDay;
 }
\ No newline at end of file
diff --git a/src/main/java/com/indayvidual/server/domain/event/converter/EventConverter.java b/src/main/java/com/indayvidual/server/domain/event/converter/EventConverter.java
index 0c56234..c097d8f 100644
--- a/src/main/java/com/indayvidual/server/domain/event/converter/EventConverter.java
+++ b/src/main/java/com/indayvidual/server/domain/event/converter/EventConverter.java
@@ -110,6 +110,7 @@ public GetDayEventResponseDto toGetDayEventResponse(Event event) {
                 .startTime(event.getStartTime().format(TIME_FORMATTER))
                 .endTime(event.getEndTime() != null ? event.getEndTime().format(TIME_FORMATTER) : null)
                 .color(event.getColorCode())
+                .isAllDay(event.getIsAllDay())
                 .build();
     }