diff --git a/common/scripts/version.txt b/common/scripts/version.txt
index 11e837dd69..293d8d75c6 100644
--- a/common/scripts/version.txt
+++ b/common/scripts/version.txt
@@ -1 +1 @@
-"0.7.136"
+"0.7.145"
diff --git a/models/calendar/src/index.ts b/models/calendar/src/index.ts
index 4ac6a2cfed..904209223f 100644
--- a/models/calendar/src/index.ts
+++ b/models/calendar/src/index.ts
@@ -140,6 +140,8 @@ export class TEvent extends TAttachedDoc implements Event {
   timeZone?: string
 
   user!: PersonId
+
+  blockTime!: boolean
 }
 
 @Model(calendar.class.ReccuringEvent, calendar.class.Event)
diff --git a/models/calendar/src/migration.ts b/models/calendar/src/migration.ts
index f68381eb6c..53cec14179 100644
--- a/models/calendar/src/migration.ts
+++ b/models/calendar/src/migration.ts
@@ -295,6 +295,11 @@ async function fillUser (client: MigrationClient): Promise<void> {
   }
 }
 
+async function fillBlockTime (client: MigrationClient): Promise<void> {
+  await client.update(DOMAIN_EVENT, { blockTime: { $exists: false }, allDay: true }, { blockTime: false })
+  await client.update(DOMAIN_EVENT, { blockTime: { $exists: false } }, { blockTime: true })
+}
+
 async function migrateTimezone (client: MigrationClient): Promise<void> {
   await client.update(
     DOMAIN_CALENDAR,
@@ -354,6 +359,11 @@ export const calendarOperation: MigrateOperation = {
         state: 'fill-user-v2',
         mode: 'upgrade',
         func: fillUser
+      },
+      {
+        state: 'fill-block-time',
+        mode: 'upgrade',
+        func: fillBlockTime
       }
     ])
   },
diff --git a/plugins/calendar-resources/src/components/CalendarView.svelte b/plugins/calendar-resources/src/components/CalendarView.svelte
index aac6106caf..a3b8df5ef9 100644
--- a/plugins/calendar-resources/src/components/CalendarView.svelte
+++ b/plugins/calendar-resources/src/components/CalendarView.svelte
@@ -262,6 +262,7 @@
           collection: 'events',
           calendar: `${acc.uuid}_calendar` as Ref<Calendar>,
           modifiedBy: myPrimaryId,
+          blockTime: true,
           participants: [me],
           modifiedOn: Date.now(),
           date: e.detail.date.getTime(),
diff --git a/plugins/calendar-resources/src/components/CreateEvent.svelte b/plugins/calendar-resources/src/components/CreateEvent.svelte
index 4fec9931cc..6921c253d1 100644
--- a/plugins/calendar-resources/src/components/CreateEvent.svelte
+++ b/plugins/calendar-resources/src/components/CreateEvent.svelte
@@ -136,6 +136,7 @@
           visibility,
           title,
           location,
+          blockTime: !allDay,
           allDay,
           access: 'owner',
           originalStartTime: allDay ? saveUTC(date) : date,
@@ -163,6 +164,7 @@
           reminders,
           title,
           location,
+          blockTime: !allDay,
           allDay,
           timeZone,
           access: 'owner',
diff --git a/plugins/calendar-resources/src/components/CreateReminder.svelte b/plugins/calendar-resources/src/components/CreateReminder.svelte
index c7c946d9da..97b1fa01ce 100644
--- a/plugins/calendar-resources/src/components/CreateReminder.svelte
+++ b/plugins/calendar-resources/src/components/CreateReminder.svelte
@@ -54,6 +54,7 @@
       participants,
       title: _title,
       allDay: false,
+      blockTime: false,
       reminders: [0],
       access: 'owner',
       user: getCurrentAccount().primarySocialId
diff --git a/plugins/calendar-resources/src/index.ts b/plugins/calendar-resources/src/index.ts
index 7a464eabfa..0615b616fa 100644
--- a/plugins/calendar-resources/src/index.ts
+++ b/plugins/calendar-resources/src/index.ts
@@ -108,7 +108,8 @@ async function deleteRecHandler (res: any, object: ReccuringInstance): Promise<v
         visibility: object.visibility,
         access: object.access,
         timeZone: object.timeZone,
-        user: object.user
+        user: object.user,
+        blockTime: object.blockTime
       },
       object._id
     )
diff --git a/plugins/calendar-resources/src/utils.ts b/plugins/calendar-resources/src/utils.ts
index 60c92b1bc2..a4e8302ef3 100644
--- a/plugins/calendar-resources/src/utils.ts
+++ b/plugins/calendar-resources/src/utils.ts
@@ -169,6 +169,7 @@ export async function updateReccuringInstance (
                   rdate: object.rdate,
                   timeZone: object.timeZone,
                   user: object.user,
+                  blockTime: object.blockTime,
                   ...ops
                 },
                 object._id
diff --git a/plugins/calendar/src/index.ts b/plugins/calendar/src/index.ts
index 2b6db13054..fa6f8e3a2d 100644
--- a/plugins/calendar/src/index.ts
+++ b/plugins/calendar/src/index.ts
@@ -121,6 +121,8 @@ export interface Event extends AttachedDoc {
   timeZone?: string
 
   user: PersonId
+
+  blockTime: boolean
 }
 
 /**
diff --git a/plugins/time-resources/src/components/CreateToDoPopup.svelte b/plugins/time-resources/src/components/CreateToDoPopup.svelte
index e7159c0e12..876b3824c2 100644
--- a/plugins/time-resources/src/components/CreateToDoPopup.svelte
+++ b/plugins/time-resources/src/components/CreateToDoPopup.svelte
@@ -97,6 +97,7 @@
         description: todo.description,
         participants: [me],
         calendar: _calendar,
+        blockTime: true,
         title: todo.title,
         allDay: false,
         access: 'owner',
@@ -149,6 +150,7 @@
       participants: [me],
       title: todo.title,
       allDay: false,
+      blockTime: true,
       access: 'owner',
       visibility: todo.visibility,
       reminders: [],
diff --git a/plugins/time-resources/src/components/PlanView.svelte b/plugins/time-resources/src/components/PlanView.svelte
index f27058800e..9ff6fd9984 100644
--- a/plugins/time-resources/src/components/PlanView.svelte
+++ b/plugins/time-resources/src/components/PlanView.svelte
@@ -65,6 +65,7 @@
       participants: [getCurrentEmployee()],
       title: doc.title,
       allDay: false,
+      blockTime: true,
       access: 'owner',
       visibility: doc.visibility === 'public' ? 'public' : 'freeBusy',
       reminders: [],
diff --git a/plugins/time-resources/src/components/PlanningCalendar.svelte b/plugins/time-resources/src/components/PlanningCalendar.svelte
index 244709e033..9c3e7bc5e9 100644
--- a/plugins/time-resources/src/components/PlanningCalendar.svelte
+++ b/plugins/time-resources/src/components/PlanningCalendar.svelte
@@ -127,6 +127,7 @@
           _class: time.class.WorkSlot,
           collection: 'events',
           visibility: 'public',
+          blockTime: true,
           calendar: _calendar,
           space: calendar.space.Calendar,
           modifiedBy: myAcc.primarySocialId,
diff --git a/plugins/time-resources/src/components/TodoWorkslots.svelte b/plugins/time-resources/src/components/TodoWorkslots.svelte
index adc78535cb..4eaa414e3d 100644
--- a/plugins/time-resources/src/components/TodoWorkslots.svelte
+++ b/plugins/time-resources/src/components/TodoWorkslots.svelte
@@ -71,6 +71,7 @@
       description: todo.description,
       participants: [getCurrentEmployee()],
       title: todo.title,
+      blockTime: true,
       allDay: false,
       access: 'owner',
       user: currentAccount.primarySocialId,
diff --git a/services/calendar/pod-calendar/src/sync.ts b/services/calendar/pod-calendar/src/sync.ts
index b3f176fea5..7e2461c0b6 100644
--- a/services/calendar/pod-calendar/src/sync.ts
+++ b/services/calendar/pod-calendar/src/sync.ts
@@ -364,7 +364,8 @@ export class IncomingSyncManager {
       calendar: _calendar,
       access: this.getAccess(event, accessRole),
       timeZone: event.start?.timeZone ?? event.end?.timeZone ?? 'Etc/GMT',
-      user: this.user.userId
+      user: this.user.userId,
+      blockTime: event.transparency !== 'transparent'
     }
     if (participants[1].length > 0) {
       res.externalParticipants = participants[1]
@@ -463,6 +464,9 @@ export class IncomingSyncManager {
           ? 'public'
           : (event.extendedProperties?.private?.visibility as Visibility) ?? 'private'
     }
+    if (event.transparency != null) {
+      res.blockTime = event.transparency !== 'transparent'
+    }
 
     return res
   }