Calendar view in local language

[Lewis_Sternberg]

Hello,

Just until yesterday I was able to read calendar months, and days of the week in my local language (Spanish) on the airtable interface for calendar:
Green arrows in the attached image show 'Diciembre' and 'Vie' (Viernes) which now shows as December and friday.

How can I make airtable to show this info in Spanish language again?