diff --git a/api/models/availabilityModel.js b/api/models/availabilityModel.js
index c7f1dd1..f12db59 100644
--- a/api/models/availabilityModel.js
+++ b/api/models/availabilityModel.js
@@ -16,7 +16,6 @@ function addAvailability(data) {
 			'preference',
 			'start_time',
 			'end_time',
-			'timezone',
 		]);
 }
 
diff --git a/api/models/meetingModel.js b/api/models/meetingModel.js
index 28f1586..1c83bb5 100644
--- a/api/models/meetingModel.js
+++ b/api/models/meetingModel.js
@@ -18,7 +18,6 @@ function addMeeting(data) {
 			'title',
 			'description',
 			'start_time',
-			'timezone',
 			'duration',
 			'status',
 		]);
@@ -33,7 +32,6 @@ function updateMeeting(data, id) {
 			'title',
 			'description',
 			'start_time',
-			'timezone',
 			'duration',
 			'status',
 		]);
@@ -52,7 +50,6 @@ function getMeetingById(id) {
 			'title',
 			'description',
 			'start_time',
-			'timezone',
 			'duration',
 			'status',
 		);
@@ -69,7 +66,6 @@ function getParticipantsByMeetingId(meeting_id) {
 			'p.mandatory',
 			'p.host',
 			'p.answered',
-			'p.timezone',
 		)
 		.join('meeting as m', { 'm.id': 'p.meeting_id' })
 		.where({ meeting_id });
@@ -92,7 +88,6 @@ function getAvailabilityByMeetingId(meeting_id) {
 			'a.preference',
 			'a.start_time',
 			'a.end_time',
-			'a.timezone',
 		)
 		.join('meeting as m', { 'm.id': 'a.meeting_id' })
 		.where({ meeting_id });
diff --git a/api/models/participantModel.js b/api/models/participantModel.js
index a369436..a895283 100644
--- a/api/models/participantModel.js
+++ b/api/models/participantModel.js
@@ -14,13 +14,10 @@ function addParticipant(data) {
 		.returning([
             'account_id',
             'meeting_id',
-			'earliest_time',
-            'latest_time',
             'quorum',
             'mandatory',
             'host',
 			'answered',
-			'timezone',
 		]);
 }
 
@@ -31,13 +28,10 @@ function updateParticipant(data, account_id, meeting_id) {
 		.returning([
             'account_id',
             'meeting_id',
-			'earliest_time',
-            'latest_time',
             'quorum',
             'mandatory',
             'host',
 			'answered',
-			'timezone',
 		]);
 }
 
@@ -52,12 +46,9 @@ function getParticipantById(account_id, meeting_id) {
 		.select(
             'account_id',
             'meeting_id',
-			'earliest_time',
-            'latest_time',
             'quorum',
             'mandatory',
             'host',
 			'answered',
-			'timezone',
 		);
 }