From aeab152beebbad85217794200a236b4ace281bb7 Mon Sep 17 00:00:00 2001
From: Martin Raspaud <martin.raspaud@smhi.se>
Date: Thu, 29 Aug 2024 14:06:10 +0200
Subject: [PATCH] Simplify jday computation

---
 pygac/reader.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pygac/reader.py b/pygac/reader.py
index c769892..3a58218 100644
--- a/pygac/reader.py
+++ b/pygac/reader.py
@@ -516,8 +516,7 @@ def get_sun_earth_distance_correction(self):
         """Get the julian day and the sun-earth distance correction."""
         self.get_times()
         # Shouldn't we use the start time from the header if available?
-        start_time = self._times_as_np_datetime64[0]
-        jday = (start_time - start_time.astype("datetime64[Y]")).astype("timedelta64[D]").astype(int) + 1
+        jday = self._times[0].timetuple().tm_yday
         return calculate_sun_earth_distance_correction(jday)
 
     def update_meta_data(self):