Incorrect NQ Contract

[AlexCatarino]

Expected Behavior

Future chain with correct contracts

Actual Behavior

The June (M) contract expires on the 18th:

Future Chain uses the 19th.

Potential Solution

Juneteenth 2026

Reproducing the Problem

qb = QuantBook()
chain = qb.future_chain(qb.add_future("NQ"))
chain.data_frame

Checklist

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• I have provided detailed steps to reproduce the issue