Hi Snake,

Thanks for the thread and spreadsheet! Here are my findings so far (these times were based on Kill (sorry I saw your thread after I wrote down the times) - but considering each Primal kill took us only about ~3 minutes you can back time it if it helps).

Content: Garuda HM
Light Received: Gentle Light
Time: 4:35 a.m. Server Time

Content: Ifrit HM
Light Received: Bright Light
Time: 4:43 a.m. Server Time

* Did another 3 x Ifrit HM immediately after (all 3 - 4 min kills): All Bright Lights. Then...

Content: Ifrit HM
Light Received: Gentle Light
Time: 5:07 a.m. Server Time

Then immediately...

Content: Garuda HM
Light Received: Gentle Light
Time: 5:18 a.m. Server Time

So maybe it's just random?