Broadcast (Nielsen) calendar month and quarter

The broadcast month is a whole number of broadcast weeks and does not align to the calendar month; a broadcast quarter has 13 or 14 weeks; the broadcast year boundary differs from the calendar. Rollups reconcile only within one calendar.

Class

Case to account for

Affects

2 conversions

Detection

Reporting mixes broadcast-month and calendar-month grains.

Mitigation

Declare which calendar; provide a broadcast↔calendar week crosswalk.

Affected conversions

Instant(ISO week × slot) key

OPEN

Broadcast day (declared cutover) ⇄ slot-set

OPEN