before I killed 2 and recieved honor for both

So...is it first kill on one of the 3 rares? Or first kill for each of the 3 rares?
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I killed all 3 yesterday and only recieved honor on my first one, yet the day before I killed 2 and recieved honor for both.

Then people in General Chat say all 3 give honor once a day, while others say only 1 per day out of all 3 give honor once per day.