How do you plan for Black Friday + NYC Fashion Week + Valentine's peak?

NYC has five distinct peak windows, not one. (1) Black Friday + Cyber Monday (Nov 27, Dec 1, ~8% of US national BFCM volume from NYC alone). (2) Christmas + Hanukkah (Dec, pre-Christmas jewellery spike for Diamond District). (3) Valentine's Day (Feb 14, NYC is the #1 US city for florist + jewellery spend, plus DTC apparel). (4) NYC Fashion Week (Sep + Feb, DTC brands time launches and collaborations, traffic spikes 5-15×). (5) Pride Month (June, DTC LGBTQ+ campaigns + Hampton's spike on Summer Fridays). War-room recipe: (a) synthetic load test at 35× baseline using k6 / JMeter, two weeks pre-peak; (b) Redis cluster + Varnish FPC with smart-purge; (c) queue-isolated checkout; (d) Stripe + Adyen tokenisation for repeat buyers; (e) AWS Local Zones NYC for in-NYC ms-latency on apparel browse; (f) Fastly in front of Magento. Also: back-to-school (Aug), Mother's Day (May), Summer Fridays (Jun-Aug B2B slowdown).