so, what was the first temperature c (calc) of patient 4085 on 09/18/this year?
select chartevents.valuenum from chartevents where chartevents.icustay_id in ( select icustays.icustay_id from icustays where icustays.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 4085 ) ) and chartevents.itemid in ( select d_items.itemid from d_items where d_items.label = 'temperature c (calc)' and d_items.linksto = 'chartevents' ) and datetime(chartevents.charttime,'start of year') = datetime(current_time,'start of year','-0 year') and strftime('%m-%d',chartevents.charttime) = '09-18' order by chartevents.charttime asc limit 1