Index: /trunk/ippTools/src/dettool.c
===================================================================
--- /trunk/ippTools/src/dettool.c	(revision 9960)
+++ /trunk/ippTools/src/dettool.c	(revision 9961)
@@ -981,5 +981,5 @@
         if (timeStr) {
             psTime *time = psTimeFromISO(timeStr, PS_TIME_UTC);
-            if (!psMetadataAddTime(time_filter, PS_LIST_TAIL, "dateobs", 0, "==", time)) {
+            if (!psMetadataAddTime(time_filter, PS_LIST_TAIL, "dateobs", 0, ">=", time)) {
                 psError(PS_ERR_UNKNOWN, false, "failed to add item dateobs");
                 psFree(time);
@@ -1000,5 +1000,5 @@
         if (timeStr) {
             psTime *time = psTimeFromISO(timeStr, PS_TIME_UTC);
-            if (!psMetadataAddTime(time_filter, PS_LIST_TAIL, "dateobs", 0, "==", time)) {
+            if (!psMetadataAddTime(time_filter, PS_LIST_TAIL, "dateobs", 0, "<", time)) {
                 psError(PS_ERR_UNKNOWN, false, "failed to add item dateobs");
                 psFree(time);