Fix jday computation

pytroll · Aug 29, 2024 · 6289b1a · 6289b1a
1 parent 26f1bde
commit 6289b1a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pygac/reader.py b/pygac/reader.py
@@ -516,7 +516,8 @@ 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?
-        jday = self._times[0].timetuple().tm_yday
+        start_time = self._times_as_np_datetime64[0]
+        jday = (start_time - start_time.astype("datetime64[Y]")).astype("timedelta64[D]").astype(int) + 1
         return calculate_sun_earth_distance_correction(jday)
 
     def update_meta_data(self):