diff --git a/app/filtering.go b/app/filtering.go
index 5b434d8..29e5cdb 100644
--- a/app/filtering.go
+++ b/app/filtering.go
@@ -1,6 +1,8 @@
 package app
 
 import (
+	"time"
+
 	"github.com/Equationzhao/g/filter"
 	"github.com/Equationzhao/g/filter/content"
 	"github.com/gabriel-vasile/mimetype"
@@ -210,4 +212,32 @@ var filteringFlag = []cli.Flag{
 		DisableDefaultText: true,
 		Category:           "FILTERING",
 	},
+	&cli.StringFlag{
+		Name:     "before",
+		Usage:    "show items which was modified/access/created before given time, the time field is determined by --time-style/--time-type",
+		Category: "FILTERING",
+		Action: func(ctx *cli.Context, s string) error {
+			t, err := time.Parse(timeFormat, s)
+			if err != nil {
+				return err
+			}
+			f := filter.BeforeTime(t.Unix(), filter.WhichTimeFiled(timeType[0]))
+			itemFilterFunc = append(itemFilterFunc, &f)
+			return nil
+		},
+	},
+	&cli.StringFlag{
+		Name:     "after",
+		Usage:    "show items which was modified/access/created after given time, the time field is determined by --time-style/--time-type",
+		Category: "FILTERING",
+		Action: func(ctx *cli.Context, s string) error {
+			t, err := time.Parse(timeFormat, s)
+			if err != nil {
+				return err
+			}
+			f := filter.AfterTime(t.Unix(), filter.WhichTimeFiled(timeType[0]))
+			itemFilterFunc = append(itemFilterFunc, &f)
+			return nil
+		},
+	},
 }
diff --git a/filter/itemfliter.go b/filter/itemfliter.go
index 3b395f9..6617678 100644
--- a/filter/itemfliter.go
+++ b/filter/itemfliter.go
@@ -3,10 +3,13 @@ package filter
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
+	"time"
 
 	"github.com/Equationzhao/g/git"
 	"github.com/Equationzhao/g/item"
+	"github.com/Equationzhao/g/osbased"
 	"github.com/gabriel-vasile/mimetype"
 	"github.com/gobwas/glob"
 )
@@ -253,3 +256,34 @@ func RemoveMimeType(fileTypes ...string) ItemFilterFunc {
 		return keep
 	}
 }
+
+func BeforeTime(t int64, timeFunc func(os.FileInfo) time.Time) ItemFilterFunc {
+	return func(e *item.FileInfo) bool {
+		return timeFunc(e).Unix() < t
+	}
+}
+
+func AfterTime(t int64, timeFunc func(os.FileInfo) time.Time) ItemFilterFunc {
+	return func(e *item.FileInfo) bool {
+		return timeFunc(e).Unix() > t
+	}
+}
+
+func WhichTimeFiled(mod string) (t func(os.FileInfo) time.Time) {
+	switch mod {
+	case "mod":
+		t = osbased.ModTime
+	case "create":
+		t = osbased.CreateTime
+	case "access":
+		t = osbased.AccessTime
+	case "birth":
+		// if darwin, check birth time
+		if runtime.GOOS == "darwin" {
+			t = osbased.BirthTime
+		} else {
+			t = osbased.CreateTime
+		}
+	}
+	return
+}