Prepositions of Time

 

in on at
  •  anos (in 1987)
  • partes do dia (in the morning/afternoon/evening)
  •  dias da semana (on Monday,...);
  • datas (on the 7th June,...)
  • dia festivo (on Christmas Day)
  •  horas (at 7 o´clock)
  • Parte do dia (at night)
  • festividades (at Christmas, Easter,...)