A Bajoran religious observance held on the anniversary of the Emissary's arrival, marked by fasting and a festival of lights, which Kira raises with Sisko in Starship Down.
Ha'mara is a Bajoran holy day that gives thanks to the Prophets for sending the Emissary. It falls on the anniversary of Benjamin Sisko's arrival at Deep Space 9 and is kept with a fast and a festival of lights.
It is mentioned in the Deep Space Nine episode Starship Down. Kira, who has always found it hard to be at ease with a commanding officer who is also a figure of her faith, notes that Sisko stayed away from the last celebration.
Later in the episode Sisko is badly concussed when the Defiant is crippled inside a gas giant, and Kira must keep him awake. She tells him stories, prays over him and admits how much the Emissary means to her. When he recovers he invites her to a baseball game in the holosuite, a small step towards the friendship she had felt unable to offer.