is a day
Es un día caluroso, presione un botón, tendrá aire.
It's a hot day, press a button, and you'll have air.
— 3 Idiotas (2009)
Los Cullen desaparecen si es un día lindo.
The Cullens disappear if it's a nice day.
A pesar de todo, es un día hermoso.
Despite everything, it's a beautiful day.
— La Tumba de las Luciérnagas (1988)
Tal vez es un día para un milagro.
Maybe it's a day for a miracle.