Function groupTransitsByMonth

groupTransitsByMonth(transits: TransitTiming[]): Record<string, TransitTiming[]>
Group transits by calendar month.
Parameters
- transits: TransitTiming[]
  Array of transit timings
Returns Record<string, TransitTiming[]>
Object mapping "YYYY-MM" to transits starting that month
- Defined in transits/transit-search.ts:257