From 04dda02b1f545215438fa893612679e9526f6aa3 Mon Sep 17 00:00:00 2001
From: Aric Camarata <aric.camarata@gmail.com>
Date: Sun, 8 Mar 2026 16:46:06 -0400
Subject: [PATCH] docs: add Acknowledgments section to README

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index f0ce6f5..ec6a9c8 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,10 @@ Full API reference and architecture notes: [GitHub Wiki](https://github.com/acam
 - [moment-hijri-plus](https://github.com/acamarata/moment-hijri-plus) - Moment.js Hijri plugin
 - [temporal-hijri](https://github.com/acamarata/temporal-hijri) - Temporal API Hijri support
 
+## Acknowledgments
+
+The Umm al-Qura calendar table is derived from data published by the King Abdulaziz City for Science and Technology (KACST), Saudi Arabia. The FCNA new moon algorithm follows Jean Meeus, "Astronomical Algorithms," 2nd ed., Chapter 49.
+
 ## License
 
 MIT. Copyright (c) 2024-2026 Aric Camarata.