From 8787a3777377dd626ee0b6ed1d5b49f9165c4b82 Mon Sep 17 00:00:00 2001
From: XANTRONIX Industrial <xan@xantronix.com>
Date: Sun, 2 Mar 2025 13:13:31 -0500
Subject: [PATCH] Fix IGRA release timestamp

---
 lib/xmet/igra.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/xmet/igra.py b/lib/xmet/igra.py
index 8196cf1..0450863 100644
--- a/lib/xmet/igra.py
+++ b/lib/xmet/igra.py
@@ -131,6 +131,13 @@ class IGRAReader():
         if match['relmin'] != '99':
             timestamp_release += datetime.timedelta(minutes=int(match['relmin']))
 
+        #
+        # Ensure the release timestamp always comes before the observation
+        # (valid) timestamp.
+        #
+        if timestamp_release > timestamp:
+            timestamp_release -= datetime.timedelta(days = 1)
+
         lat = int(match['lat']) / 1000.0
         lon = int(match['lon']) / 1000.0