diff --git a/rules/br/deadline.go b/rules/br/deadline.go
new file mode 100644
index 0000000..3d1d639
--- /dev/null
+++ b/rules/br/deadline.go
@@ -0,0 +1,104 @@
+package br
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/AlekSi/pointer"
+	"github.com/olebedev/when/rules"
+	"github.com/pkg/errors"
+)
+
+func Deadline(s rules.Strategy) rules.Rule {
+	overwrite := s == rules.Override
+
+	return &rules.F{
+		RegExp: regexp.MustCompile(
+			"(?i)(?:\\W|^)(dentro\\sde|em)\\s*" +
+				"(?:(" + INTEGER_WORDS_PATTERN + "|[0-9]+|(?:\\s*pouc[oa](?:s|)?|algu(?:mas|m|ns)?|mei[oa]?))\\s*" +
+				"(segundos?|min(?:uto)?s?|horas?|dias?|semanas?|mês|meses|anos?)\\s*)" +
+				"(?:\\W|$)"),
+		Applier: func(m *rules.Match, c *rules.Context, o *rules.Options, ref time.Time) (bool, error) {
+			numStr := strings.TrimSpace(m.Captures[1])
+
+			var num int
+			var err error
+
+			if n, ok := INTEGER_WORDS[numStr]; ok {
+				num = n
+			} else if strings.Contains(numStr, "pouc") || strings.Contains(numStr, "algu") {
+				num = 3
+			} else if strings.Contains(numStr, "mei") {
+				// pass
+			} else {
+				num, err = strconv.Atoi(numStr)
+				if err != nil {
+					return false, errors.Wrapf(err, "convert '%s' to int", numStr)
+				}
+			}
+
+			exponent := strings.TrimSpace(m.Captures[2])
+
+			if !strings.Contains(numStr, "mei") {
+				switch {
+				case strings.Contains(exponent, "segundo"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Second
+					}
+				case strings.Contains(exponent, "min"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Minute
+					}
+				case strings.Contains(exponent, "hora"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Hour
+					}
+				case strings.Contains(exponent, "dia"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "semana"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * 7 * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "mês"), strings.Contains(exponent, "meses"):
+					if c.Month == nil || overwrite {
+						c.Month = pointer.ToInt((int(ref.Month()) + num) % 12)
+					}
+				case strings.Contains(exponent, "ano"):
+					if c.Year == nil || overwrite {
+						c.Year = pointer.ToInt(ref.Year() + num)
+					}
+				}
+			} else {
+				switch {
+				case strings.Contains(exponent, "hora"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 30 * time.Minute
+					}
+				case strings.Contains(exponent, "dia"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 12 * time.Hour
+					}
+				case strings.Contains(exponent, "semana"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 7 * 12 * time.Hour
+					}
+				case strings.Contains(exponent, "mês"), strings.Contains(exponent, "meses"):
+					if c.Duration == 0 || overwrite {
+						// 2 weeks
+						c.Duration = 14 * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "ano"):
+					if c.Month == nil || overwrite {
+						c.Month = pointer.ToInt((int(ref.Month()) + 6) % 12)
+					}
+				}
+			}
+
+			return true, nil
+		},
+	}
+}
diff --git a/rules/br/deadline_test.go b/rules/br/deadline_test.go
new file mode 100644
index 0000000..caba3d9
--- /dev/null
+++ b/rules/br/deadline_test.go
@@ -0,0 +1,34 @@
+package br_test
+
+import (
+	"testing"
+	"time"
+
+	"github.com/olebedev/when"
+	"github.com/olebedev/when/rules"
+	"github.com/olebedev/when/rules/br"
+)
+
+func TestDeadline(t *testing.T) {
+	fixt := []Fixture{
+		{"dentro de meia hora", 0, "dentro de meia hora", time.Hour / 2},
+		{"dentro de 1 hora", 0, "dentro de 1 hora", time.Hour},
+		{"em 5 minutos", 0, "em 5 minutos", time.Minute * 5},
+		{"Em 5 minutos eu irei para casa", 0, "Em 5 minutos", time.Minute * 5},
+		{"nós precisamos fazer algo dentro de 10 dias.", 27, "dentro de 10 dias", 10 * 24 * time.Hour},
+		{"nós temos que fazer algo em cinco dias.", 26, "em cinco dias", 5 * 24 * time.Hour},
+		{"nós temos que fazer algo em 5 dias.", 26, "em 5 dias", 5 * 24 * time.Hour},
+		{"Em 5 segundos, um carro precisa se mover", 0, "Em 5 segundos", 5 * time.Second},
+		{"dentro de duas semanas", 0, "dentro de duas semanas", 14 * 24 * time.Hour},
+		{"dentro de um mês", 0, "dentro de um mês", 31 * 24 * time.Hour},
+		{"dentro de alguns meses", 0, "dentro de alguns meses", 91 * 24 * time.Hour},
+		{"dentro de poucos meses", 0, "dentro de poucos meses", 91 * 24 * time.Hour},
+		{"dentro de um ano", 0, "dentro de um ano", 366 * 24 * time.Hour},
+		{"em uma semana", 0, "em uma semana", 7 * 24 * time.Hour},
+	}
+
+	w := when.New(nil)
+	w.Add(br.Deadline(rules.Skip))
+
+	ApplyFixtures(t, "br.Deadline", w, fixt)
+}
diff --git a/rules/nl/deadline.go b/rules/nl/deadline.go
new file mode 100644
index 0000000..6f2212c
--- /dev/null
+++ b/rules/nl/deadline.go
@@ -0,0 +1,106 @@
+package nl
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/AlekSi/pointer"
+	"github.com/olebedev/when/rules"
+	"github.com/pkg/errors"
+)
+
+func Deadline(s rules.Strategy) rules.Rule {
+	overwrite := s == rules.Override
+
+	return &rules.F{
+		RegExp: regexp.MustCompile(
+			"(?i)(?:\\W|^)(binnen|in|over|na)\\s*" +
+				"(" + INTEGER_WORDS_PATTERN + "|[0-9]+|een(?:\\s*(paar|half|halve))?)\\s*" +
+				"(seconden?|minuut|minuten|uur|uren|dag|dagen|week|weken|maand|maanden|jaar|jaren)\\s*" +
+				"(?:\\W|$)"),
+		Applier: func(m *rules.Match, c *rules.Context, o *rules.Options, ref time.Time) (bool, error) {
+			numStr := strings.TrimSpace(m.Captures[1])
+
+			var num int
+			var err error
+
+			if n, ok := INTEGER_WORDS[numStr]; ok {
+				num = n
+			} else if numStr == "een" {
+				num = 1
+			} else if strings.Contains(numStr, "paar") {
+				num = 3
+			} else if strings.Contains(numStr, "half") || strings.Contains(numStr, "halve") {
+				// pass
+			} else {
+				num, err = strconv.Atoi(numStr)
+				if err != nil {
+					return false, errors.Wrapf(err, "convert '%s' to int", numStr)
+				}
+			}
+
+			exponent := strings.TrimSpace(m.Captures[3])
+
+			if !strings.Contains(numStr, "half") && !strings.Contains(numStr, "halve") {
+				switch {
+				case strings.Contains(exponent, "second"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Second
+					}
+				case strings.Contains(exponent, "min"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Minute
+					}
+				case strings.Contains(exponent, "uur"), strings.Contains(exponent, "uren"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * time.Hour
+					}
+				case strings.Contains(exponent, "dag"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "week"), strings.Contains(exponent, "weken"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = time.Duration(num) * 7 * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "maand"):
+					if c.Month == nil || overwrite {
+						c.Month = pointer.ToInt((int(ref.Month()) + num) % 12)
+					}
+				case strings.Contains(exponent, "jaar"):
+					if c.Year == nil || overwrite {
+						c.Year = pointer.ToInt(ref.Year() + num)
+					}
+				}
+			} else {
+				switch {
+				case strings.Contains(exponent, "uur"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 30 * time.Minute
+					}
+				case strings.Contains(exponent, "dag"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 12 * time.Hour
+					}
+				case strings.Contains(exponent, "week"):
+					if c.Duration == 0 || overwrite {
+						c.Duration = 7 * 12 * time.Hour
+					}
+				case strings.Contains(exponent, "maand"):
+					if c.Duration == 0 || overwrite {
+						// 2 weeks
+						c.Duration = 14 * 24 * time.Hour
+					}
+				case strings.Contains(exponent, "jaar"):
+					if c.Month == nil || overwrite {
+						c.Month = pointer.ToInt((int(ref.Month()) + 6) % 12)
+					}
+				}
+			}
+
+			return true, nil
+		},
+	}
+}
diff --git a/rules/nl/deadline_test.go b/rules/nl/deadline_test.go
new file mode 100644
index 0000000..0fc6f94
--- /dev/null
+++ b/rules/nl/deadline_test.go
@@ -0,0 +1,34 @@
+package nl_test
+
+import (
+	"github.com/olebedev/when/rules/nl"
+	"testing"
+	"time"
+
+	"github.com/olebedev/when"
+	"github.com/olebedev/when/rules"
+)
+
+func TestDeadline(t *testing.T) {
+	fixt := []Fixture{
+		{"binnen een half uur", 0, "binnen een half uur", time.Hour / 2},
+		{"binnen 1 uur", 0, "binnen 1 uur", time.Hour},
+		{"in 5 minuten", 0, "in 5 minuten", time.Minute * 5},
+		{"Binnen 5 minuten ga ik naar huis", 0, "Binnen 5 minuten", time.Minute * 5},
+		{"we moeten binnen 10 dagen iets doen", 10, "binnen 10 dagen", 10 * 24 * time.Hour},
+		{"we moeten binnen vijf dagen iets doen", 10, "binnen vijf dagen", 5 * 24 * time.Hour},
+		{"we moeten over 5 dagen iets doen", 10, "over 5 dagen", 5 * 24 * time.Hour},
+		{"In 5 seconde moet een auto verplaatsen", 0, "In 5 seconde", 5 * time.Second},
+		{"binnen twee weken", 0, "binnen twee weken", 14 * 24 * time.Hour},
+		{"binnen een maand", 0, "binnen een maand", 31 * 24 * time.Hour},
+		{"na een maand", 0, "na een maand", 31 * 24 * time.Hour},
+		{"binnen een paar maanden", 0, "binnen een paar maanden", 91 * 24 * time.Hour},
+		{"binnen een jaar", 0, "binnen een jaar", 366 * 24 * time.Hour},
+		{"in een week", 0, "in een week", 7 * 24 * time.Hour},
+	}
+
+	w := when.New(nil)
+	w.Add(nl.Deadline(rules.Skip))
+
+	ApplyFixtures(t, "nl.Deadline", w, fixt)
+}