diff --git a/cmd/serv.go b/cmd/serv.go
index 1ff296d007..d7fe6c6630 100644
--- a/cmd/serv.go
+++ b/cmd/serv.go
@@ -18,6 +18,7 @@ import (
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/private"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 
 	"github.com/Unknwon/com"
 	"github.com/dgrijalva/jwt-go"
@@ -219,8 +220,8 @@ func runServ(c *cli.Context) error {
 				fail("Internal error", "GetDeployKey: %v", err)
 			}
 
-			deployKey.Updated = time.Now()
-			if err = models.UpdateDeployKey(deployKey); err != nil {
+			deployKey.UpdatedUnix = util.TimeStampNow()
+			if err = models.UpdateDeployKeyCols(deployKey, "updated_unix"); err != nil {
 				fail("Internal error", "UpdateDeployKey: %v", err)
 			}
 		} else {
diff --git a/models/issue_tracked_time.go b/models/issue_tracked_time.go
index 3b2360f68f..c314f8f44f 100644
--- a/models/issue_tracked_time.go
+++ b/models/issue_tracked_time.go
@@ -7,6 +7,7 @@ package models
 import (
 	"time"
 
+	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/sdk/gitea"
 
 	"github.com/go-xorm/builder"
@@ -24,7 +25,7 @@ type TrackedTime struct {
 
 // AfterLoad is invoked from XORM after setting the values of all fields of this object.
 func (t *TrackedTime) AfterLoad() {
-	t.Created = time.Unix(t.CreatedUnix, 0).Local()
+	t.Created = time.Unix(t.CreatedUnix, 0).In(setting.UILocation)
 }
 
 // APIFormat converts TrackedTime to API format
diff --git a/models/ssh_key.go b/models/ssh_key.go
index ea313f147a..4d276ebeb7 100644
--- a/models/ssh_key.go
+++ b/models/ssh_key.go
@@ -600,20 +600,16 @@ type DeployKey struct {
 	Fingerprint string
 	Content     string `xorm:"-"`
 
-	Created           time.Time `xorm:"-"`
-	CreatedUnix       int64     `xorm:"created"`
-	Updated           time.Time `xorm:"-"`
-	UpdatedUnix       int64     `xorm:"updated"`
-	HasRecentActivity bool      `xorm:"-"`
-	HasUsed           bool      `xorm:"-"`
+	CreatedUnix       util.TimeStamp `xorm:"created"`
+	UpdatedUnix       util.TimeStamp `xorm:"updated"`
+	HasRecentActivity bool           `xorm:"-"`
+	HasUsed           bool           `xorm:"-"`
 }
 
 // AfterLoad is invoked from XORM after setting the values of all fields of this object.
 func (key *DeployKey) AfterLoad() {
-	key.Created = time.Unix(key.CreatedUnix, 0).Local()
-	key.Updated = time.Unix(key.UpdatedUnix, 0).Local()
-	key.HasUsed = key.Updated.After(key.Created)
-	key.HasRecentActivity = key.Updated.Add(7 * 24 * time.Hour).After(time.Now())
+	key.HasUsed = key.UpdatedUnix > key.CreatedUnix
+	key.HasRecentActivity = key.UpdatedUnix.AddDuration(7*24*time.Hour) > util.TimeStampNow()
 }
 
 // GetContent gets associated public key content.
@@ -740,6 +736,12 @@ func GetDeployKeyByRepo(keyID, repoID int64) (*DeployKey, error) {
 	return key, nil
 }
 
+// UpdateDeployKeyCols updates deploy key information in the specified columns.
+func UpdateDeployKeyCols(key *DeployKey, cols ...string) error {
+	_, err := x.ID(key.ID).Cols(cols...).Update(key)
+	return err
+}
+
 // UpdateDeployKey updates deploy key information.
 func UpdateDeployKey(key *DeployKey) error {
 	_, err := x.ID(key.ID).AllCols().Update(key)
diff --git a/models/user.go b/models/user.go
index 0a2e2e9f92..fa5dc73deb 100644
--- a/models/user.go
+++ b/models/user.go
@@ -151,14 +151,6 @@ func (u *User) UpdateDiffViewStyle(style string) error {
 	return UpdateUserCols(u, "diff_view_style")
 }
 
-/*
-// AfterLoad is invoked from XORM after setting the values of all fields of this object.
-func (u *User) AfterLoad() {
-	u.Created = time.Unix(u.CreatedUnix, 0).Local()
-	u.Updated = time.Unix(u.UpdatedUnix, 0).Local()
-	u.LastLogin = time.Unix(u.LastLoginUnix, 0).Local()
-}*/
-
 // getEmail returns an noreply email, if the user has set to keep his
 // email address private, otherwise the primary email address.
 func (u *User) getEmail() string {
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index 46ef20f61e..7d86ef3056 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -531,6 +531,9 @@ var (
 	IterateBufferSize int
 
 	ExternalMarkupParsers []MarkupParser
+	// UILocation is the location on the UI, so that we can display the time on UI.
+	// Currently only show the default time.Local, it could be added to app.ini after UI is ready
+	UILocation = time.Local
 )
 
 // DateLang transforms standard language locale name to corresponding value in datetime plugin.
diff --git a/modules/util/time_stamp.go b/modules/util/time_stamp.go
index 4a12a2cabe..a03560b24f 100644
--- a/modules/util/time_stamp.go
+++ b/modules/util/time_stamp.go
@@ -4,7 +4,11 @@
 
 package util
 
-import "time"
+import (
+	"time"
+
+	"code.gitea.io/gitea/modules/setting"
+)
 
 // TimeStamp defines a timestamp
 type TimeStamp int64
@@ -31,13 +35,13 @@ func (ts TimeStamp) Year() int {
 
 // AsTime convert timestamp as time.Time in Local locale
 func (ts TimeStamp) AsTime() (tm time.Time) {
-	tm = time.Unix(int64(ts), 0).Local()
+	tm = time.Unix(int64(ts), 0).In(setting.UILocation)
 	return
 }
 
 // AsTimePtr convert timestamp as *time.Time in Local locale
 func (ts TimeStamp) AsTimePtr() *time.Time {
-	tm := time.Unix(int64(ts), 0).Local()
+	tm := time.Unix(int64(ts), 0).In(setting.UILocation)
 	return &tm
 }
 
diff --git a/routers/api/v1/convert/convert.go b/routers/api/v1/convert/convert.go
index 1bfd7f1ff0..e24ac0518c 100644
--- a/routers/api/v1/convert/convert.go
+++ b/routers/api/v1/convert/convert.go
@@ -164,7 +164,7 @@ func ToDeployKey(apiLink string, key *models.DeployKey) *api.DeployKey {
 		Key:      key.Content,
 		URL:      apiLink + com.ToStr(key.ID),
 		Title:    key.Name,
-		Created:  key.Created,
+		Created:  key.CreatedUnix.AsTime(),
 		ReadOnly: true, // All deploy keys are read-only.
 	}
 }