diff --git a/src/ripple/app/misc/NetworkOPs.cpp b/src/ripple/app/misc/NetworkOPs.cpp
index fa26e2b4d1..9efd446139 100644
--- a/src/ripple/app/misc/NetworkOPs.cpp
+++ b/src/ripple/app/misc/NetworkOPs.cpp
@@ -124,11 +124,15 @@ public:
 
     // Our best estimate of current ledger close time
     std::uint32_t getCloseTimeNC () const;
+    std::uint32_t getCloseTimeNC (int& offset) const;
 
     // Use *only* to timestamp our own validation
     std::uint32_t getValidationTimeNC ();
     void closeTimeOffset (int);
-    boost::posix_time::ptime getNetworkTimePT () const;
+
+    /** On return the offset param holds the System time offset in seconds.
+    */
+    boost::posix_time::ptime getNetworkTimePT(int& offset) const;
     std::uint32_t getLedgerID (uint256 const& hash);
     std::uint32_t getCurrentLedgerID ();
     OperatingMode getOperatingMode () const
@@ -762,12 +766,14 @@ std::string NetworkOPsImp::strOperatingMode () const
     return paStatusToken[mMode];
 }
 
-boost::posix_time::ptime NetworkOPsImp::getNetworkTimePT () const
+boost::posix_time::ptime NetworkOPsImp::getNetworkTimePT (int& offset) const
 {
-    int offset = 0;
-
+    offset = 0;
     getApp().getSystemTimeOffset (offset);
 
+    if (std::abs (offset) >= 60)
+        m_journal.warning << "Large system time offset (" << offset << ").";
+
     // VFALCO TODO Replace this with a beast call
     return boost::posix_time::microsec_clock::universal_time () +
             boost::posix_time::seconds (offset);
@@ -775,12 +781,20 @@ boost::posix_time::ptime NetworkOPsImp::getNetworkTimePT () const
 
 std::uint32_t NetworkOPsImp::getNetworkTimeNC () const
 {
-    return iToSeconds (getNetworkTimePT ());
+    int offset;
+    return iToSeconds (getNetworkTimePT (offset));
 }
 
 std::uint32_t NetworkOPsImp::getCloseTimeNC () const
 {
-    return iToSeconds (getNetworkTimePT () +
+    int offset;
+    return iToSeconds (getNetworkTimePT (offset) +
+                       boost::posix_time::seconds (mCloseTimeOffset));
+}
+
+std::uint32_t NetworkOPsImp::getCloseTimeNC (int& offset) const
+{
+    return iToSeconds (getNetworkTimePT (offset) +
                        boost::posix_time::seconds (mCloseTimeOffset));
 }
 
@@ -806,7 +820,12 @@ void NetworkOPsImp::closeTimeOffset (int offset)
         mCloseTimeOffset = (mCloseTimeOffset * 3) / 4;
 
     if (mCloseTimeOffset != 0)
+    {
         m_journal.info << "Close time offset now " << mCloseTimeOffset;
+
+        if (std::abs (mCloseTimeOffset) >= 60)
+            m_journal.warning << "Large close time offset (" << mCloseTimeOffset << ").";
+    }
 }
 
 std::uint32_t NetworkOPsImp::getLedgerID (uint256 const& hash)
@@ -2420,8 +2439,14 @@ Json::Value NetworkOPsImp::getServerInfo (bool human, bool admin)
                     lpClosed->getReserveInc () * baseFee / baseRef))
                     / SYSTEM_CURRENCY_PARTS;
 
-            std::uint32_t closeTime = getCloseTimeNC ();
-            std::uint32_t lCloseTime = lpClosed->getCloseTimeNC ();
+            int offset;
+            std::uint32_t closeTime (getCloseTimeNC (offset));
+            if (std::abs (offset) >= 60)
+                l[jss::system_time_offset] = offset;
+
+            std::uint32_t lCloseTime (lpClosed->getCloseTimeNC ());
+            if (std::abs (mCloseTimeOffset) >= 60)
+                l[jss::close_time_offset] = mCloseTimeOffset;
 
             if (lCloseTime <= closeTime)
             {
diff --git a/src/ripple/app/misc/NetworkOPs.h b/src/ripple/app/misc/NetworkOPs.h
index fb0879ad89..e98e946fd8 100644
--- a/src/ripple/app/misc/NetworkOPs.h
+++ b/src/ripple/app/misc/NetworkOPs.h
@@ -109,7 +109,7 @@ public:
     // Use *only* to timestamp our own validation
     virtual std::uint32_t getValidationTimeNC () = 0;
     virtual void closeTimeOffset (int) = 0;
-    virtual boost::posix_time::ptime getNetworkTimePT () const = 0;
+    virtual boost::posix_time::ptime getNetworkTimePT (int& offset) const = 0;
     virtual std::uint32_t getLedgerID (uint256 const& hash) = 0;
     virtual std::uint32_t getCurrentLedgerID () = 0;
 
diff --git a/src/ripple/protocol/JsonFields.h b/src/ripple/protocol/JsonFields.h
index 15f5c1ab54..51423fdbbe 100644
--- a/src/ripple/protocol/JsonFields.h
+++ b/src/ripple/protocol/JsonFields.h
@@ -58,6 +58,7 @@ JSS ( closed_ledger );
 JSS ( close_time );
 JSS ( close_time_estimated );
 JSS ( close_time_human );
+JSS ( close_time_offset );
 JSS ( close_time_resolution );
 JSS ( code );
 JSS ( command );
@@ -152,6 +153,7 @@ JSS ( server_status );
 JSS ( stand_alone );
 JSS ( status );
 JSS ( success );
+JSS ( system_time_offset );
 JSS ( taker_gets );
 JSS ( taker_gets_funded );
 JSS ( taker_pays );