I think it is Clivia miniata.

I agree it's a Clivia, a nice looking one too. Looks happy in your care.

Clivia blooms once a year, especially if you can give it cooler and dryer conditions during winter. Mine used to bloom in January-February. I kept it in an unheated bedroom upstairs from October-November, and when the flowerbuds became visible, I took it down to the livingroom.