Yes, both Ukraine and Canada (which has a lot of citizens of Ukrainian heritage) both observe Holodomor Remembrance Day on the fourth Saturday in November every year.
Armenia, in her turn, remembers the Aghet every year on the 24th of April, when the deportations in the Ottoman Empire began in 1915.
Seyfo, the massacre of Syriac Christians in 1917, however, has no official memorial day anywhere yet, iirc.