User:GTrang/To do/2020


 * ✅ Create a category for common years (Category:Common years).
 * ✅ (mostly by HolidaysBot) Rearrange categories on some year pages.
 * ✅ (by HolidaysBot except for the year 1582) Populate the "Common years" category with year pages in addition to subcategories.
 * ✅ Create pages for Julian years going as far back as the year 45 BC.
 * ✅ Create a page for Tax Day.
 * ✅ (mostly by HolidaysBot) Add Tax Day to the list of holidays on year pages from 1913 to 4000.
 * ✅ (by HolidaysBot for the AD year pages and manually for the BC year pages, century pages, and century categories) Add Holocene Era default sort keys to year pages, century pages, and century categories to make BC years and centuries properly sorted before AD ones in Category:Years and Category:Centuries respectively.
 * ✅ Make New Year's Day, Epiphany, Valentine's Day, Leap Day, Saint Patrick's Day, Halloween, Christmas Eve, Christmas, and New Year's Eve show a table with seven columns linking to Julian year pages instead of the 28-year cycle.
 * ✅ Make the templates for Easter and related holidays (e.g. Template:Easter 1583–1699) clearly link to the corresponding year pages.