diff --git a/src/time/time_point.rs b/src/time/time_point.rs
index 302b613..ddf1455 100644
--- a/src/time/time_point.rs
+++ b/src/time/time_point.rs
@@ -2,7 +2,7 @@ use core::fmt;
 use std::ops::Neg;
 
 /// Define a time in milliseconds
-#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct TimePoint(i64);
 
 impl TimePoint {
diff --git a/src/time/time_span.rs b/src/time/time_span.rs
index 1eaab28..63d15a3 100644
--- a/src/time/time_span.rs
+++ b/src/time/time_span.rs
@@ -2,7 +2,7 @@ use super::TimePoint;
 use core::fmt::{self, Debug};
 
 /// Define a time span with a start time and an end time.
-#[derive(Clone, Copy, PartialEq, Eq)]
+#[derive(Clone, Copy, Default, PartialEq, Eq)]
 pub struct TimeSpan {
     /// Start time of the span
     pub start: TimePoint,