When can I expect to see Hirintror again?

Question

How long do I have to wait inbetween each Hirintror? For example, a Hirintror spawned today in my server... When can I expect to see him again at that same spot?

Answer 1

Using the data from the last 40 Hirintrors killed on a specific world, here are some information:

• Minimum interval between kills: 10 days
• Maximum interval between kills: 31 days
• Average interval between kills: 18~24 days (using data for both spots)

Both the Formorgar Mines one and the Nibelor one seem to have the same interval between spawns. Please keep in mind it's possible we missed bosses between kills, or bosses poofed, etc.