Master List of Madrigal Birthdays
With star signs and days significance
Abuela Alma - ?
Abuelo Pedro (don't know if he's going to show up but sure) - ?
Julieta, Pepa and Bruno - October 17th, Libra, anniversary of start date of the Thousand Days' War in Colombia (originally started October 17th 1899)
Félix - November 11th, Scorpio, day Cartagena won independence from Spain (first city in Colombia to do so)
Agustín - June 19th, Gemini, Colombian Father's Day (also, if born on a Wednesday would means he's born in 1901 making him 49)
Isabela - August 7th, Leo, Colombian day of independence for Spain (Battle of Boyacá)
Dolores - August 31st, Virgo, Patron Saint of Childbirth and Confidentiality of Confession
Luisa - Novemver 14th, Scorpio, Day of the Colombian Woman (Día de la Mujer Colombiana)
Camilo - December 28th, Capricorn, Colombian equivalent of April Fools Day (día de los inocentes)
Mirabel - March 6th, Pisces, same birthday as Gabriel García Márquez who write One Hundrend Years of Solitude - a huge influence in the creation on the Encanto movie
Antonio - May 21st, Gemini, day slavery was abolished in Colombia (Afro-Colombia Day/Día de la afrocolombianidad)
(All birthdays confirmed by Jared Bush, the co-director and co-writer of Encanto)