Thank you for your response! Indeed, it would work if only date_wday was in my data... But no worries, it inspired me, and I worked on it to finally find a solution! I've set my time range to "6 last days" :  index=yourindex | timechart span=1d sum(NbrHashOK) as sommehash | fillnull value=0 sommehash | eval Jour=strftime(_time, "%A %d %B %Y"), day_of_week = strftime(_time,"%A"), now=strftime(now(),"%A") , test=case(now="Monday" AND (day_of_week="Thursday" OR day_of_week="Friday"),"OK", now="Tuesday" AND (day_of_week="Friday" OR day_of_week="Monday"),"OK", now="Wednesday" AND (day_of_week="Monday" OR day_of_week="Tuesday"),"OK", now="Thursday" AND (day_of_week="Tuesday" OR day_of_week="Wednesday"),"OK", now="Friday" AND (day_of_week="Wednesday" OR day_of_week="Thursday"),"OK", 1=1,0) | where test="OK" | stats sum(sommehash) as test_sommehash values(Jour) as jour   ... View more