diff --git a/internal/router/calendar.go b/internal/router/calendar.go
index 3f86976..4fd7870 100644
--- a/internal/router/calendar.go
+++ b/internal/router/calendar.go
@@ -29,13 +29,26 @@ var dayPlanWords = []string{
 	"plan", "plans", "schedule", "agenda",
 }
 
-// otherDayWords — a day that is not today. The plan is built for the clock's
-// own day only, so an utterance naming another one belongs to the calendar
-// listing instead. Claiming it here would answer the wrong day, which is worse
-// than answering more tersely.
+// otherDayWords — a span that is not the clock's own day. The plan can only be
+// built for today, so an utterance naming another day, a weekday, a week or a
+// weekend belongs to the calendar listing instead. Claiming it here would
+// answer today and stamp it with today's date, which is a wrong answer where
+// falling through is only a terse one.
+//
+// The weekday names are here as a refusal, not as a feature. "какие планы на
+// понедельник?" carries no other-day token in the сегодня family and does carry
+// "планы", so the plan used to claim it and recite today.
 var otherDayWords = []string{
 	"завтра", "послезавтра", "вчера", "позавчера",
 	"tomorrow", "yesterday",
+	"понедельник", "вторник", "среду", "среда", "четверг", "пятницу", "пятница",
+	"субботу", "суббота", "воскресенье",
+	"понедельника", "вторника", "четверга", "пятницы", "субботы", "воскресенья",
+	"monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday",
+	"неделю", "неделя", "недели", "неделе",
+	"выходные", "выходных", "выходным",
+	"месяц", "месяца", "месяце",
+	"week", "weekend", "month",
 }
 
 // IsDayPlanQuery reports whether an utterance asks for today's plan (Vikunja
@@ -67,6 +80,18 @@ func IsDayPlanQuery(text string) bool {
 		(hasTok(toks, "what") && hasTok(toks, "next"))
 }
 
+// IsRestOfDayQuery reports whether the utterance asks for what is left of the
+// day rather than for the whole of it — "что дальше?" and its English form.
+//
+// Tokenized for the same reason IsDayPlanQuery is: the substring form matched
+// "дальше" inside longer words and "next" inside "nextcloud", and the two
+// predicates deciding the same utterance differently is worse than either
+// being wrong on its own.
+func IsRestOfDayQuery(text string) bool {
+	toks := planTokens(text)
+	return hasTok(toks, "дальше") || hasTok(toks, "next")
+}
+
 func hasTok(toks []string, w string) bool {
 	for _, t := range toks {
 		if t == w {
diff --git a/internal/router/calendar_test.go b/internal/router/calendar_test.go
index 4772733..7937a94 100644
--- a/internal/router/calendar_test.go
+++ b/internal/router/calendar_test.go
@@ -81,3 +81,38 @@ func TestIsDayPlanQuery(t *testing.T) {
 		}
 	}
 }
+
+// The plan is built for the clock's own day. A weekday, a week or a weekend
+// carries no сегодня-family token, so the plan used to claim the utterance and
+// recite today under today's date. Refusing is the right answer until the plan
+// can build a day that is not the clock's own.
+func TestIsDayPlanQueryRefusesOtherSpans(t *testing.T) {
+	for _, s := range []string{
+		"какие планы на понедельник?",
+		"планы на пятницу",
+		"какие планы на неделю?",
+		"планы на выходные",
+		"какие планы на месяц?",
+		"what are my plans for friday?",
+		"my plan for the week",
+	} {
+		if IsDayPlanQuery(s) {
+			t.Errorf("IsDayPlanQuery(%q) = true, want false", s)
+		}
+	}
+}
+
+// The rest-of-day test tokenizes like IsDayPlanQuery does. The substring form
+// it replaced fired on any word containing "next" or "дальше".
+func TestIsRestOfDayQuery(t *testing.T) {
+	for _, s := range []string{"что дальше?", "и что потом, дальше?", "what's next", "NEXT"} {
+		if !IsRestOfDayQuery(s) {
+			t.Errorf("IsRestOfDayQuery(%q) = false, want true", s)
+		}
+	}
+	for _, s := range []string{"какие планы на сегодня?", "проверь nextcloud", "дальшесъезд", ""} {
+		if IsRestOfDayQuery(s) {
+			t.Errorf("IsRestOfDayQuery(%q) = true, want false", s)
+		}
+	}
+}