Historical clue formulations

• ___ grano salis — 2018-03-02
• ___ laude — 2016-07-14
• Combined with — 2014-03-23
• Summa ___ laude — 2012-09-10
• ___ grano salis — 2005-02-11
• ___ laude — 2003-07-27
• Diploma word — 2000-06-28
• Diploma word — 1999-12-12
• Word of honor? — 1995-10-27
• Diploma word — 1995-07-09
• _____ grano salis — 1995-05-20
• Word on a diploma — 1994-03-10