The December season in Accra: concerts, festivals, beach parties, weddings and a very large diaspora presence in the city.
Detty is Pidgin for dirty, in the sense of unrestrained.
It has grown substantially since the Year of Return in 2019, and December is now a distinct economic season in Accra — flights fill months ahead, hotel and short-let prices rise sharply, and the traffic in Osu and East Legon becomes remarkable.
Practically, if you are coming in December: book flights and accommodation early, expect prices to be higher than the rest of the year, and expect government offices to be effectively unavailable from mid-month.