when did patient 24364 first receive a diagnosis of hypovolemia when they came to the hospital first time?
select diagnoses_icd.charttime from diagnoses_icd where diagnoses_icd.icd9_code = ( select d_icd_diagnoses.icd9_code from d_icd_diagnoses where d_icd_diagnoses.short_title = 'hypovolemia' ) and diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 24364 and admissions.dischtime is not null order by admissions.admittime asc limit 1 ) order by diagnoses_icd.charttime asc limit 1