I just called Red Lobster and it's not going on now it's a seasonal thing she told me. But I googled it and according to several websites it looks like it starts at the very end of August and goes into September. Right now they have their Lobster Fest going on (2-28-18). I hope this helps you.
Usually in the fall
The endless shrimp dinner is in September
Lobsterfest now, no idea if it was before or after
Back in the Fall
In the fall
September
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