diff --git a/daemon/core/time.hpp b/daemon/core/time.hpp
index 5efd082..2c9498f 100644
--- a/daemon/core/time.hpp
+++ b/daemon/core/time.hpp
@@ -8,152 +8,19 @@
 #define NFD_CORE_TIME_H
 
 #include "common.hpp"
+#include <ndn-cpp-dev/util/time.hpp>
 
 namespace nfd {
 namespace time {
 
-class monotonic_clock;
-
-/** \class Duration
- *  \brief represents a time interval
- *  Time unit is nanosecond.
- */
-class Duration
-{
-public:
-  Duration()
-    : m_value(0)
-  {
-  }
-
-  explicit
-  Duration(int64_t value)
-    : m_value(value)
-  {
-  }
-  
-  operator int64_t&()
-  {
-    return m_value;
-  }
-
-  operator const int64_t&() const
-  {
-    return m_value;
-  }
-
-  Duration
-  operator+(const Duration& other) const
-  {
-    return Duration(this->m_value + other.m_value);
-  }
-  
-  Duration
-  operator-(const Duration& other) const
-  {
-    return Duration(this->m_value - other.m_value);
-  }
-
-private:
-  int64_t m_value;
-};
-
-/** \class Point
- *  \brief represents a point in time
- *  This uses monotonic clock.
- */
-class Point
-{
-public:
-  Point()
-    : m_value(0)
-  {
-  }
-
-  explicit
-  Point(int64_t value)
-    : m_value(value)
-  {
-  }
-  
-  operator int64_t&()
-  {
-    return m_value;
-  }
-
-  operator const int64_t&() const
-  {
-    return m_value;
-  }
-
-  Point
-  operator+(const Duration& other) const
-  {
-    return Point(this->m_value + static_cast<int64_t>(other));
-  }
-  
-  Duration
-  operator-(const Point& other) const
-  {
-    return Duration(this->m_value - other.m_value);
-  }
-
-  Point
-  operator-(const Duration& other) const
-  {
-    return Point(this->m_value  - static_cast<int64_t>(other));
-  }
-  
-private:
-  int64_t m_value;
-};
-
-/**
- * \brief Get current time
- * \return{ the current time in monotonic clock }
- */
-Point
-now();
-
-/**
- * \brief Get time::Duration for the specified number of seconds
- */
-template<class T>
-inline Duration
-seconds(T value)
-{
-  return Duration(value * static_cast<int64_t>(1000000000));
-}
-
-/**
- * \brief Get time::Duration for the specified number of milliseconds
- */
-template<class T>
-inline Duration
-milliseconds(T value)
-{
-  return Duration(value * static_cast<int64_t>(1000000));
-}
-
-/**
- * \brief Get time::Duration for the specified number of microseconds
- */
-template<class T>
-inline Duration
-microseconds(T value)
-{
-  return Duration(value * static_cast<int64_t>(1000));
-}
-
-/**
- * \brief Get time::Duration for the specified number of nanoseconds
- */
-inline Duration
-nanoseconds(int64_t value)
-{
-  return Duration(value);
-}
-
+using ndn::time::Duration;
+using ndn::time::Point;
+using ndn::time::monotonic_clock;
+using ndn::time::now;
+using ndn::time::seconds;
+using ndn::time::milliseconds;
+using ndn::time::microseconds;
+using ndn::time::nanoseconds;
 
 } // namespace time
 } // namespace nfd