From a923944b8b56f448c03f9567deb75bc272361421 Mon Sep 17 00:00:00 2001
From: ted <ted@timmons.me>
Date: Mon, 22 Jul 2024 19:57:10 -0700
Subject: [PATCH] PR feedback, test zero

---
 adafruit_ntp.py | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/adafruit_ntp.py b/adafruit_ntp.py
index d1b29af..5d71a72 100644
--- a/adafruit_ntp.py
+++ b/adafruit_ntp.py
@@ -103,13 +103,8 @@ def datetime(self) -> time.struct_time:
             seconds = struct.unpack_from("!I", self._packet, offset=PACKET_SIZE - 8)[0]
 
             # value should always be larger; giving a small buffer to handle jitter.
-            if (seconds + 5) < self._monotonic_start:
-                failed_offset = (self._monotonic_start - seconds) / 1_000_000_000
-                raise ArithmeticError(
-                    "need a time machine, ntp time is "
-                    + str(failed_offset)
-                    + "seconds in the past."
-                )
+            if seconds == 0:
+                raise ArithmeticError("ntp value is invalid (empty)")
 
             self._monotonic_start = (
                 seconds