diff --git a/core/modules/filters/days.js b/core/modules/filters/days.js
index 39cd375f7..318d72567 100644
--- a/core/modules/filters/days.js
+++ b/core/modules/filters/days.js
@@ -27,6 +27,7 @@ exports.days = function(source,operator,options) {
 		};
 
 	if(operator.prefix === "!") {
+		targetTimeStamp = targetTimeStamp - 1000*60*60*24*dayIntervalSign;
 		source(function(tiddler,title) {
 			if(tiddler && tiddler.fields[fieldName]) {
 				if(!isWithinDays($tw.utils.parseDate(tiddler.fields[fieldName]))) {
diff --git a/editions/tw5.com/tiddlers/filters/days.tid b/editions/tw5.com/tiddlers/filters/days.tid
index 732bb3aab..8ca1b2baf 100644
--- a/editions/tw5.com/tiddlers/filters/days.tid
+++ b/editions/tw5.com/tiddlers/filters/days.tid
@@ -3,7 +3,7 @@ title: days Operator
 type: text/vnd.tiddlywiki
 caption: days
 op-input: a [[selection of titles|Title Selection]]
-op-neg-output: those input tiddlers in which field <<.place F>> is more than <<.place D>> days in the { future | past }, where <<.place D>> is { positive | negative }
+op-neg-output: those input tiddlers in which field <<.place F>> is at least <<.place D>> days in the { future | past }, where <<.place D>> is { positive | negative }
 op-output: those input tiddlers in which field <<.place F>> is <<.place D>> days in the { future | past } or any time { before | after } that, including { past | future }, where <<.place D>> is { positive | negative }
 op-parameter: a number of days, defaulting to 0
 op-parameter-name: D