diff --git a/src/time/common.rs b/src/time/common.rs
index e3feb72..31b50d5 100644
--- a/src/time/common.rs
+++ b/src/time/common.rs
@@ -1,7 +1,8 @@
 use chrono::NaiveDateTime;
 use derive_more::Constructor;
 
-#[derive(Debug, Clone, Copy, Constructor)]
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Constructor)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct DateTimeInterval {
     pub start: NaiveDateTime,
     pub end: NaiveDateTime,