Nice answer,but I don't think that it's the right one. I think that the June 1st opener was set up to standerize streams opening on the West side. They used to always open on Memorial day every year,so to make it simple they opened them all on the 1st of June. But then I could be wrong also. Memorial day was a different day every year. <img border="0" alt="[fragile]" title="" src="graemlins/fragile.gif" />

Edit:I don't really know when they spawn,But I would guess that it would be about the same time as their big brothers and sisters do.
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I forgot what I was supposed remember.