diff --git a/src/lib/time/lumitime.cpp b/src/lib/time/lumitime.cpp
index f80dc9c6e..82de03645 100644
--- a/src/lib/time/lumitime.cpp
+++ b/src/lib/time/lumitime.cpp
@@ -41,6 +41,9 @@ namespace time {
   const Time Time::MIN ( TimeValue::buildRaw_(-_raw(Time::MAX)                             ) );
   const Time Time::ZERO;
   
+  const Time Time::ANYTIME(Time::MAX);
+  const Time Time::NEVER  (Time::MIN);
+  
   const Offset Offset::ZERO (Time::ZERO);
   
   
diff --git a/src/lib/time/timevalue.hpp b/src/lib/time/timevalue.hpp
index 0c8fb2e15..4b429b0ea 100644
--- a/src/lib/time/timevalue.hpp
+++ b/src/lib/time/timevalue.hpp
@@ -284,6 +284,9 @@ namespace time {
       static const Time MIN ;
       static const Time ZERO;
       
+      static const Time ANYTIME;  ///< border condition marker value. #ANYTIME <= any time value
+      static const Time NEVER;   ///<  border condition marker value. #NEVER >= any time value
+      
       explicit 
       Time (TimeValue const& val =TimeValue(0))
         : TimeValue(val)