Branch was updated using the 'autoupdate branch' Actions workflow.

Author: Octomerger

content/admin/enterprise-support/about-github-enterprise-support.md

@@ -93,7 +93,7 @@ For urgent issues, we can help you in English 24 hours per day, 7 days per week,
 | Day after Thanksgiving      | Fourth Friday in November   |
 | Christmas Eve               | December 24                 |
 | Christmas Day               | December 25                 |
-| Day after Christmas         | December 26                 |
+| Day after Christmas         | December 28                 |
 | New Year's Eve              | December 31                 |
 
 #### Holidays in Japan

content/admin/enterprise-support/about-support-for-advanced-security.md

@@ -44,7 +44,7 @@ We offer support for {% data variables.product.prodname_advanced_security %} in
 
 {% data variables.contact.enterprise_support %} observes these U.S. holidays.
 
-| U.S. holiday                | Date observed in 2018       |
+| U.S. holiday                | Date observed       |
 | ---                         | ---                         |
 | New Year's Day              | January 1                   |
 | Martin Luther King, Jr. Day | Third Monday in January     |
@@ -57,7 +57,7 @@ We offer support for {% data variables.product.prodname_advanced_security %} in
 | Day after Thanksgiving      | Fourth Friday in November   |
 | Christmas Eve               | December 24                 |
 | Christmas Day               | December 25                 |
-| Day after Christmas         | December 26                 |
+| Day after Christmas         | December 28                 |
 | New Year's Eve              | December 31                 |
 
 ### Installing {% data variables.product.prodname_advanced_security %} updates

layouts/product-landing.html

@@ -42,6 +42,7 @@ <h1 class="mb-3 font-mktg">
             <div class="col-12 col-lg-6">
               <div class="position-relative" style="padding-bottom:56.25%;">
                 <iframe
+                  title="{{ page.shortTitle }} Video"
                   class="top-0 left-0 position-absolute box-shadow-large rounded-1 width-full height-full"
                   src="{{ page.product_video }}"
                   frameborder="0"