Spanish Days of the Week Decoded: Why Domingo Translates to Sunday
By Elena Rostova
Observing how Romance language day names evolved illustrates why Monday through Friday honor planets and Roman deities, while Saturday and Sunday stand apart. Monday (lunes) honors the moon; Tuesday (martes) honors Mars; Wednesday (miércoles) honors Mercury; Thursday (jueves) honors Jupiter; and Friday (viernes) honors Venus.
The weekend breaks the astrological naming pattern entirely. Sábado stems from the Hebrew Shabbat (Sabbath) via Latin sabbatum. Domingo follows the Christian Latin reform. Portuguese diverged entirely from its sister languages in the sixth century, when Bishop Martin of Braga eliminated all pagan names from the workweek, leaving only Saturday and Sunday with traditional Mediterranean names.
| English | Spanish | Latin Origin | Portuguese | Etymological Source |
|---|---|---|---|---|
| Monday | lunes | dies Lunae | segunda-feira | The Moon |
| Tuesday | martes | dies Martis | terça-feira | Mars (God of War) |
| Wednesday | miércoles | dies Mercurii | quarta-feira | Mercury (Messenger God) |
| Thursday | jueves | dies Iovis | quinta-feira | Jupiter / Jove (King of Gods) |
| Friday | viernes | dies Veneris | sexta-feira | Venus (Goddess of Love) |
| Saturday | sábado | sabbatum | sábado | Shabbat (Day of Rest) |
| Sunday | domingo | dies Dominicus | domingo | The Lord's Day |
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
