diff --git a/libgnucash/engine/gnc-date.cpp b/libgnucash/engine/gnc-date.cpp
index 060625f3cd..4d361e806f 100644
--- a/libgnucash/engine/gnc-date.cpp
+++ b/libgnucash/engine/gnc-date.cpp
@@ -1287,6 +1287,24 @@ gnc_dmy2timespec_internal (int day, int month, int year, DayPart day_part)
     }
 }
 
+time64
+gnc_dmy2time64 (int day, int month, int year)
+{
+    return gnc_dmy2timespec_internal (day, month, year, DayPart::start).tv_sec;
+}
+
+time64
+gnc_dmy2time64_end (int day, int month, int year)
+{
+    return gnc_dmy2timespec_internal (day, month, year, DayPart::end).tv_sec;
+}
+
+time64
+gnc_dmy2time64_neutral (int day, int month, int year)
+{
+    return gnc_dmy2timespec_internal (day, month, year, DayPart::neutral).tv_sec;
+}
+
 Timespec
 gnc_dmy2timespec (int day, int month, int year)
 {
diff --git a/libgnucash/engine/gnc-date.h b/libgnucash/engine/gnc-date.h
index 113e4a0e1c..f948549af1 100644
--- a/libgnucash/engine/gnc-date.h
+++ b/libgnucash/engine/gnc-date.h
@@ -354,6 +354,13 @@ GDate timespec_to_gdate (Timespec ts);
 /** Turns a GDate into a Timespec, returning the first second of the day  */
 Timespec gdate_to_timespec (GDate d);
 
+/** Convert a day, month, and year to a time64, returning the first second of the day */
+time64 gnc_dmy2time64 (gint day, gint month, gint year);
+
+time64 gnc_dmy2time64_neutral (gint day, gint month, gint year);
+
+time64 gnc_dmy2time64_end (gint day, gint month, gint year);
+
 /** Convert a day, month, and year to a Timespec, returning the first second of the day */
 Timespec gnc_dmy2timespec (gint day, gint month, gint year);