From 7172ce867e3df37e09aa29ddd7102de8004057ea Mon Sep 17 00:00:00 2001
From: michealroberts <michael@observerly.com>
Date: Mon, 12 Oct 2026 06:54:29 +0000
Subject: [PATCH] feat: add MINUTES_IN_DAY to constants module in
 @observerly/astrometry

feat: add MINUTES_IN_DAY to constants module in @observerly/astrometry
---
 src/constants.ts        |  9 +++++++++
 src/index.ts            |  1 +
 tests/constants.spec.ts | 19 ++++++++++++++++++-
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/constants.ts b/src/constants.ts
index af48928..34de340 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -46,6 +46,15 @@ export const SECONDS_IN_DAY = 86400
 
 /*****************************************************************************************************************/
 
+/**
+ *
+ * The number of minutes in a mean solar day of 86,400 seconds.
+ *
+ */
+export const MINUTES_IN_DAY = 1440
+
+/*****************************************************************************************************************/
+
 export const SECONDS_IN_YEAR = 31556925.445
 
 /*****************************************************************************************************************/
diff --git a/src/index.ts b/src/index.ts
index 56b8a22..745d42f 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -87,6 +87,7 @@ export {
   J1900,
   J1970,
   J2000,
+  MINUTES_IN_DAY,
   SECONDS_IN_DAY,
   SECONDS_IN_HOUR,
   SECONDS_IN_YEAR,
diff --git a/tests/constants.spec.ts b/tests/constants.spec.ts
index f01ee8d..d7dee79 100644
--- a/tests/constants.spec.ts
+++ b/tests/constants.spec.ts
@@ -10,7 +10,24 @@ import { describe, expect, it } from 'vitest'
 
 /*****************************************************************************************************************/
 
-import { TWO_PI } from '../src/constants'
+import { MINUTES_IN_DAY, SECONDS_IN_DAY, TWO_PI } from '../src/constants'
+
+/*****************************************************************************************************************/
+
+describe('MINUTES_IN_DAY', () => {
+  it('should be defined', () => {
+    expect(MINUTES_IN_DAY).toBeDefined()
+  })
+
+  it('should be the number of minutes in a mean solar day', () => {
+    expect(MINUTES_IN_DAY).toBe(1440)
+    expect(MINUTES_IN_DAY).toBe(24 * 60)
+  })
+
+  it('should be the number of seconds in a day in minutes', () => {
+    expect(MINUTES_IN_DAY).toBe(SECONDS_IN_DAY / 60)
+  })
+})
 
 /*****************************************************************************************************************/