in operational mode, we can not retrieve additional day for flux disaggregation, stick to end date

Source/Python/Mods/get_mars_data.py

@@ -297,10 +297,12 @@ def mk_dates(c, fluxes):
 
     if c.purefc and fluxes and c.maxstep < 24:
         start = start - timedelta(days=1)
+        if not c.oper:
                 end = end + timedelta(days=1)
 
     if not c.purefc and fluxes and not c.basetime == 0:
         start = start - timedelta(days=1)
+        if not c.oper:
                 end = end + timedelta(days=1)
 
     # if we have non-flux forecast data starting at 18 UTC