diff --git a/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68c497f3aaefc9fd9f1b0e24.md b/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68c497f3aaefc9fd9f1b0e24.md
index e8e010bdec1..dd1234113f5 100644
--- a/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68c497f3aaefc9fd9f1b0e24.md
+++ b/curriculum/challenges/english/blocks/daily-coding-challenges-javascript/68c497f3aaefc9fd9f1b0e24.md
@@ -22,6 +22,8 @@ After day 28, the cycle repeats with day 1, a new moon.
 - You will not be given any dates before the reference date.
 - Return the correct phase as a string.
 
+**Note:** Day 1 represents the day of the new moon, meaning 0 days have passed since the last new moon.
+
 # --hints--
 
 `moonPhase("2000-01-12")` should return `"New"`.
diff --git a/curriculum/challenges/english/blocks/daily-coding-challenges-python/68c497f3aaefc9fd9f1b0e24.md b/curriculum/challenges/english/blocks/daily-coding-challenges-python/68c497f3aaefc9fd9f1b0e24.md
index f7ce71e6412..e5779c6dce2 100644
--- a/curriculum/challenges/english/blocks/daily-coding-challenges-python/68c497f3aaefc9fd9f1b0e24.md
+++ b/curriculum/challenges/english/blocks/daily-coding-challenges-python/68c497f3aaefc9fd9f1b0e24.md
@@ -22,6 +22,8 @@ After day 28, the cycle repeats with day 1, a new moon.
 - You will not be given any dates before the reference date.
 - Return the correct phase as a string.
 
+**Note:** Day 1 represents the day of the new moon, meaning 0 days have passed since the last new moon.
+
 # --hints--
 
 `moon_phase("2000-01-12")` should return `"New"`.