diff --git a/ayanova/src/api/relative-date-filter-calculator.js b/ayanova/src/api/relative-date-filter-calculator.js
index 737d94d2..b9827b9f 100644
--- a/ayanova/src/api/relative-date-filter-calculator.js
+++ b/ayanova/src/api/relative-date-filter-calculator.js
@@ -54,6 +54,7 @@ export default {
   //new functions above here
 };
 //LUXON MATH: https://moment.github.io/luxon/docs/manual/zones.html#math-across-dsts
+//https://moment.github.io/luxon/docs/manual/math.html
 
 
 // //###############################################################  OLD SERVER FILTERING CODE ##########################