[01:00:03] <mdholloway>	 jem: to briefly answer your question about the existing content: for eswiki, the initial set of events shown on the card in the feed is taken from the Plantilla:Efemérides page for a given date (e.g., https://es.wikipedia.org/wiki/Plantilla:Efem%C3%A9rides_-_19_de_junio).
[01:03:03] <mdholloway>	 the list shown in the full activity launched when the card is tapped is taken from the "Acontecimientos" section of the main article for the date (e.g., https://es.wikipedia.org/wiki/19_de_junio#Acontecimientos).
[01:04:25] <mdholloway>	 as for using the specially selected events you mentioned from "rounded" years shown on https://es.wikipedia.org/wiki/Wikipedia:Portada, please file a feature request ticket on phab and we'll discuss it!
[10:23:43] <jem>	 Thanks, mdholloway... I would like to know if that information is/can be frequently updated from the source... if it's not, then it would be useless to open the ticket :) I will be reading during the day