diff --git a/lib/std/time/clock.c3 b/lib/std/time/clock.c3
index e247f2a53..6cb40d161 100644
--- a/lib/std/time/clock.c3
+++ b/lib/std/time/clock.c3
@@ -13,22 +13,27 @@ fn Clock now()
 fn NanoDuration Clock.mark(&self)
 {
 	Clock mark = now();
-	NanoDuration diff = (NanoDuration)(mark - *self);
+	NanoDuration diff = mark - *self;
 	*self = mark;
 	return diff;
 }
 
-fn Clock Clock.add_nano_duration(self, NanoDuration nano)
+fn Clock Clock.add_nano_duration(self, NanoDuration nano) @operator_s(+) @inline
 {
 	return (Clock)((NanoDuration)self + nano);
 }
 
-fn Clock Clock.add_duration(self, Duration duration)
+fn Clock Clock.add_duration(self, Duration duration) @operator_s(+) @inline
 {
 	return self.add_nano_duration(duration.to_nano());
 }
 
-fn NanoDuration Clock.to_now(self)
+fn NanoDuration Clock.nano_diff(self, Clock other) @operator(-) @inline
 {
-	return (NanoDuration)(now() - self);
+	return (NanoDuration)self - (NanoDuration)other;
+}
+
+fn NanoDuration Clock.to_now(self) @inline
+{
+	return (NanoDuration)now() - (NanoDuration)self;
 }
\ No newline at end of file
diff --git a/lib/std/time/datetime.c3 b/lib/std/time/datetime.c3
index 30dbdf5e9..276fbff33 100644
--- a/lib/std/time/datetime.c3
+++ b/lib/std/time/datetime.c3
@@ -106,7 +106,7 @@ fn TzDateTime DateTime.to_gmt_offset(self, int gmt_offset)
 *>
 fn TzDateTime TzDateTime.to_gmt_offset(self, int gmt_offset) {
 	if (self.gmt_offset == gmt_offset) return self;
-	Time time = self.time + (Time)gmt_offset * (Time)time::SEC;
+	Time time = self.time + gmt_offset * time::SEC;
 	DateTime dt = from_time(time);
 	dt.time = self.time;
 	return { dt, gmt_offset };
diff --git a/lib/std/time/time.c3 b/lib/std/time/time.c3
index b50ebefe0..04d1c865d 100644
--- a/lib/std/time/time.c3
+++ b/lib/std/time/time.c3
@@ -19,11 +19,11 @@ const Duration MONTH = 30 * DAY;
 const Duration YEAR = 36525 * DAY / 100;
 const Duration FOREVER = long.max;
 
-fn Duration us(long l) @inline => (Duration)l * US;
-fn Duration ms(long l) @inline => (Duration)l * MS;
-fn Duration sec(long l) @inline => (Duration)l * SEC;
-fn Duration min(long l) @inline => (Duration)l * MIN;
-fn Duration hour(long l) @inline => (Duration)l * HOUR;
+fn Duration us(long l) @inline => l * US;
+fn Duration ms(long l) @inline => l * MS;
+fn Duration sec(long l) @inline =>l * SEC;
+fn Duration min(long l) @inline => l * MIN;
+fn Duration hour(long l) @inline => l * HOUR;
 fn Duration from_float(double s) @inline => (Duration)(s * (double)SEC);
 
 struct DateTime
@@ -82,21 +82,21 @@ fn Time now()
 	$endif
 }
 
-fn Time Time.add_seconds(time, long seconds) => time + (Time)(seconds * (long)SEC);
-fn Time Time.add_minutes(time, long minutes) => time + (Time)(minutes * (long)MIN);
-fn Time Time.add_hours(time, long hours) => time + (Time)(hours * (long)HOUR);
-fn Time Time.add_days(time, long days) => time + (Time)(days * (long)DAY);
-fn Time Time.add_weeks(time, long weeks) => time + (Time)(weeks * (long)WEEK);
-fn Time Time.add_duration(time, Duration duration) @operator(+) => time + (Time)duration;
+fn Time Time.add_seconds(time, long seconds) => time + seconds * SEC;
+fn Time Time.add_minutes(time, long minutes) => time + minutes * MIN;
+fn Time Time.add_hours(time, long hours) => time + hours * HOUR;
+fn Time Time.add_days(time, long days) => time + days * DAY;
+fn Time Time.add_weeks(time, long weeks) => time + weeks * WEEK;
+fn Time Time.add_duration(time, Duration duration) @operator_s(+) @inline => (Time)((long)time + (long)duration);
 
 fn int Time.compare_to(time, Time other)
 {
-	if (time == other) return 0;
+	if ((long)time == (long)other) return 0;
 	return time > other ? 1 : -1;
 }
 
 fn double Time.to_seconds(time) => (long)time / (double)SEC;
-fn Duration Time.diff_us(time, Time other) @operator(-) => (Duration)(time - other);
+fn Duration Time.diff_us(time, Time other) @operator(-) => (Duration)((long)time - (long)other);
 fn double Time.diff_sec(time, Time other) => (long)time.diff_us(other) / (double)SEC;
 fn double Time.diff_min(time, Time other) => (long)time.diff_us(other) / (double)MIN;
 fn double Time.diff_hour(time, Time other) => (long)time.diff_us(other) / (double)HOUR;
@@ -108,6 +108,7 @@ fn long NanoDuration.to_ms(nd) => (long)nd / 1_000_000;
 fn Duration NanoDuration.to_duration(nd) => (Duration)nd / 1_000;
 fn NanoDuration Duration.to_nano(td) => (NanoDuration)td * 1_000;
 fn long Duration.to_ms(td) => (long)td / 1_000;
+macro Duration Duration.mult(#td, long #val) @operator_s(*) @safemacro => (Duration)((long)#td * #val);
 
 fn usz? NanoDuration.to_format(&self, Formatter* formatter) @dynamic
 {
diff --git a/releasenotes.md b/releasenotes.md
index d5e4140bc..a5add73e9 100644
--- a/releasenotes.md
+++ b/releasenotes.md
@@ -10,12 +10,14 @@
 - Assert when a macro with compile time value is discarded, e.g. `foo();` where `foo()` returns an untyped list. #2117
 - Fix stringify for compound initializers #2120.
 - Fix No index OOB check for `[:^n]` #2123
+- Fix regression in Time diff due to operator overloading #2124
 
 ### Stdlib changes
 - Added `String.quick_ztr` and `String.is_zstr`
 - std::ascii moved into std::core::ascii. Old _m variants are deprecated, as is uint methods.
 - Add `String.tokenize_all` to replace the now deprecated `String.splitter`
 - Add `String.count` to count the number of instances of a string.
+- Add `Duration * Int` and `Clock - Clock` overload. 
 
 ## 0.7.1 Change list
 
diff --git a/src/compiler/sema_decls.c b/src/compiler/sema_decls.c
index 93f27c71c..ab71abf97 100755
--- a/src/compiler/sema_decls.c
+++ b/src/compiler/sema_decls.c
@@ -1779,6 +1779,7 @@ static Decl *sema_find_exact_typed_operator_in_list(Decl **methods, OperatorOver
 	FOREACH(Decl *, func, methods)
 	{
 		if (func == skipped) continue;
+		if (!decl_ok(func)) continue;
 		if (func->func_decl.operator != operator_overload) continue;
 		if (parent_type && parent_type != typeget(func->func_decl.type_parent)) continue;
 		if ((overload_type & func->func_decl.overload_type) == 0) continue;
diff --git a/src/compiler/sema_expr.c b/src/compiler/sema_expr.c
index 44e5c84af..6bb65fa65 100644
--- a/src/compiler/sema_expr.c
+++ b/src/compiler/sema_expr.c
@@ -10964,19 +10964,22 @@ bool sema_insert_method_call(SemaContext *context, Expr *method_call, Decl *meth
 	Expr *resolve = method_call;
 	if (reverse_overload)
 	{
-		Decl *temp = decl_new_generated_var(method_decl->func_decl.signature.params[1]->type, VARDECL_LOCAL, parent->span);
-		Expr *generate = expr_generate_decl(temp, expr_copy(parent));
-		parent->expr_kind = EXPR_IDENTIFIER;
-		parent->ident_expr = temp;
-		parent->resolve_status = RESOLVE_DONE;
-		parent->type = temp->type;
-		if (!sema_analyse_expr(context, generate)) return false;
-		Expr *copied_method = expr_copy(method_call);
-		expr_rewrite_two(method_call, generate, copied_method);
+		if (!expr_is_const(parent))
+		{
+			Decl *temp = decl_new_generated_var(method_decl->func_decl.signature.params[1]->type, VARDECL_LOCAL, parent->span);
+			Expr *generate = expr_generate_decl(temp, expr_copy(parent));
+			parent->expr_kind = EXPR_IDENTIFIER;
+			parent->ident_expr = temp;
+			parent->resolve_status = RESOLVE_DONE;
+			parent->type = temp->type;
+			if (!sema_analyse_expr(context, generate)) return false;
+			Expr *copied_method = expr_copy(method_call);
+			expr_rewrite_two(method_call, generate, copied_method);
+			method_call = copied_method;
+		}
 		Expr *arg0 = arguments[0];
 		arguments[0] = parent;
 		parent = arg0;
-		method_call = copied_method;
 	}
 	*method_call = (Expr) { .expr_kind = EXPR_CALL,
 			.span = original_span,
@@ -11001,19 +11004,6 @@ bool sema_insert_method_call(SemaContext *context, Expr *method_call, Decl *meth
 			expr_rewrite_insert_deref(parent);
 		}
 	}
-	else if (!expr_may_ref(parent))
-	{
-		Expr *inner = expr_copy(parent);
-		parent->expr_kind = EXPR_UNARY;
-		Type *inner_type = inner->type;
-		bool optional = type_is_optional(inner->type);
-		parent->type = type_add_optional(type_get_ptr(type_no_optional(inner_type)), optional);
-		parent->unary_expr.operator = UNARYOP_TADDR;
-		parent->unary_expr.expr = inner;
-		parent->resolve_status = RESOLVE_NOT_DONE;
-		if (!sema_analyse_expr(context, parent)) return false;
-		expr_rewrite_insert_deref(parent);
-	}
 	ASSERT_SPAN(method_call, parent && parent->type && first == parent->type->canonical);
 	if (!sema_expr_analyse_general_call(context, method_call, method_decl, parent, false,
 										NULL)) return expr_poison(method_call);
diff --git a/test/unit/stdlib/time/time.c3 b/test/unit/stdlib/time/time.c3
index e67f3c980..85d2e1be5 100644
--- a/test/unit/stdlib/time/time.c3
+++ b/test/unit/stdlib/time/time.c3
@@ -2,6 +2,24 @@ module nanoduration_test @test;
 import std::io;
 import std::time;
 
+fn void time_diff()
+{
+	Time t = time::now();
+	Time t2 = t + time::SEC;
+	test::eq(t2 - t, time::SEC);
+	test::ne(t, t2);
+	test::eq(t, t);
+}
+
+fn void clock_diff()
+{
+	Clock c = clock::now();
+	Clock c2 = c + time::SEC.to_nano();
+	test::eq(c2 - c, time::SEC.to_nano());
+	c2 = c + time::DAY;
+	test::eq(c2 - c, time::DAY.to_nano());
+}
+
 fn void to_format()
 {
 	char[32] buffer;