It gets its name from the masclets (very loud firecrackers) that are tied by a wick to form a line or firework display.
What distinguishes a mascletà from a succession of explosions is the rhythm that masclets must create to explode.
It is essential that the force of the explosions must gradually rise, before coming to a dramatic conclusion; because without that, a mascletà can not be considered as such.
Initially the mascletà was let off in the Plaça de l'Ajuntament of Valencia on March 19 (Saint Joseph's Day) as the culmination of the festivities.
The mascletades are famous throughout all the Community of Valencia but those especially well-known are from March 1 to 19 at 2:00 pm in the Plaça de l'Ajuntament of Valencia and from March 3 to 19 at 2:00 pm in the Plaça del Regne of Alzira, both during the Fallas festivities.