modify course info messages

lms/djangoapps/courseware/date_summary.py

@@ -10,6 +10,7 @@ from babel.dates import format_timedelta
 
 from django.conf import settings
 from django.core.urlresolvers import reverse
+from django.utils.formats import date_format
 from django.utils.functional import cached_property
 from django.utils.translation import get_language, to_locale, ugettext_lazy
 from django.utils.translation import ugettext as _
@@ -523,6 +524,13 @@ class VerifiedUpgradeDeadlineDate(DateSummary):
             return
         days_left_to_upgrade = (self.date - self.current_time).days
         if self.date > self.current_time and days_left_to_upgrade <= settings.COURSE_MESSAGE_ALERT_DURATION_IN_DAYS:
+            upgrade_message = _(
+                "Don't forget, you have {time_remaining_string} left to upgrade to a Verified Certificate."
+            ).format(time_remaining_string=self.time_remaining_string)
+            if self._dynamic_deadline() is not None:
+                upgrade_message = _(
+                    "Don't forget to upgrade to a verified certificate by {localized_date}."
+                ).format(localized_date=date_format(self.date))
             CourseHomeMessages.register_info_message(
                 request,
                 Text(_(
@@ -542,11 +550,7 @@ class VerifiedUpgradeDeadlineDate(DateSummary):
                         upgrade_label=Text(_('Upgrade ({upgrade_price})')).format(upgrade_price=upgrade_price),
                     )
                 ),
-                title=Text(_(
-                    "Don't forget, you have {time_remaining_string} left to upgrade to a Verified Certificate."
-                )).format(
-                    time_remaining_string=self.time_remaining_string,
-                )
+                title=Text(upgrade_message)
             )