1. The time when a business, office, or service establishment opens and begins serving customers
The opening of service is at 8 AM on weekdays.
A abertura do atendimento é às 8 da manhã nos dias de semana.
2. The commencement of customer service operations for a particular day or period
We need to prepare everything before the opening of service.
Precisamos preparar tudo antes da abertura do atendimento.