From 02ae07e093b2002b7f5e86fbb593363d972ad7da Mon Sep 17 00:00:00 2001
From: Art Cancro <ajc@citadel.org>
Date: Thu, 20 Feb 2020 12:03:29 -0500
Subject: [PATCH] fix bad logic

---
 the_perfect_clock.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/the_perfect_clock.ino b/the_perfect_clock.ino
index 2ca7d1f..917f568 100644
--- a/the_perfect_clock.ino
+++ b/the_perfect_clock.ino
@@ -313,7 +313,7 @@ void calibrate()
   static unsigned long last_calib = -86398000;
   unsigned long m = millis();
   unsigned long mm = m - last_calib;
-  if (50000 < mm < 70000) {
+  if ((50000 < mm) && (mm < 70000)) {
     millis_per_minute = mm;
   }
   last_calib = m;
-- 
2.30.2