upamiętniać in English:

Recently a special service was held to commemorate its 750 years

The government decided to commemorate the anniversary.

This plaque commemorates the events of 11th September, 2001.

Since that time, Tibetans have not been allowed tocommemorate that day freely

Youngsters have recited poetry to commemorate a century of war.

They were erected to commemorate a certain event or to tell an ancestral legend.