what is the {criterion used} for {Saturday} has {series ordinal} as {0} ?
How will the rest of the week be ordered if saturday is the first day of the week?
How do you determine Saturday is the first date of the week?
SELECT ?n WHERE { ?n property:criterion_used ?n . resource:Saturday property:series_ordinal ?n . FILTER ( ?m = 0 ) . ?n property:series_ordinal ?m }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q131> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1545> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <0> .
?statement <http://www.wikidata.org/entity/P1013> ?value. 
} 

SELECT ?value WHERE { wd:Q131 p:P1545 ?s . ?s ps:P1545 ?x filter(contains(?x , '0')) . ?s pq:P1013 ?value}