minor tweaks in plot

SAS/TMSS/backend/src/tmss/tmssapp/adapters/plots.py

@@ -98,6 +98,7 @@ def scheduling_constraints_plot(scheduling_units: Union[models.SchedulingUnitBlu
     elevation_axes.set_ylim(0, 90)
     elevation_axes.set_ylabel('elevation [deg]')
 
+
     # determine x-axis time range and timestamp_to_x_value function
     if proposed_date is not None:
         lower_timestamp = datetime(proposed_date.year, proposed_date.month, proposed_date.day, 0, 0, 0)
@@ -201,7 +202,7 @@ def scheduling_constraints_plot(scheduling_units: Union[models.SchedulingUnitBlu
         for constraint, value in scheduling_unit.scheduling_constraints_doc.get('daily',{}).items():
             if value:
                 start_end_pairs = ((start_day, end_day),) if constraint=='require_day' else \
-                                  ((start_night, end_night),) if constraint == 'require_night' else \
+                                  ((start_prev_night, end_prev_night), (start_night, end_night),) if constraint == 'require_night' else \
                                   ((start_morning_twilight, end_morning_twilight), (start_evening_twilight, end_evening_twilight))
 
                 for start, end in start_end_pairs:
@@ -276,7 +277,7 @@ def scheduling_constraints_plot(scheduling_units: Union[models.SchedulingUnitBlu
                                         xy=(obs_center_timestamp, 0), xycoords='data',
                                         xytext=(obs_center_timestamp, max_elevation_at_center-obs_idx*8), textcoords='data',
                                         arrowprops=dict(color="slateblue", arrowstyle="-", linestyle='dashed', alpha=0.75),
-                                        horizontalalignment='center', verticalalignment='bottom', alpha=0.8)
+                                        horizontalalignment='center', verticalalignment='bottom', alpha=0.8, annotation_clip=None)
 
                 if single_unit_plot:
                     transit_offset_constraints = scheduling_unit.scheduling_constraints_doc.get('sky', {}).get('transit_offset', {})
@@ -369,7 +370,7 @@ def scheduling_constraints_plot(scheduling_units: Union[models.SchedulingUnitBlu
                             elevation_axes.text(obs_timestamps[0] if obs_start_timestamp < center_timestamp else obs_timestamps[-1],
                                                 min_elevation + 1,
                                                 'min %s elevation %.1f[deg]' % (obs_type, min_elevation),
-                                                horizontalalignment='left' if obs_start_timestamp < center_timestamp or proposed_date is not None else 'right',
+                                                horizontalalignment='left' if obs_start_timestamp < center_timestamp else 'right',
                                                 verticalalignment='bottom')