date-range.clj

(def jira-time-format (f/formatter "yyyy-MM-dd HH:mm"))
(def short-time-format (f/formatter "yyyy-MM-dd"))

(defn get-time-series
  ([start-date end-date]
   (let [start-date (f/parse jira-time-format start-date)
         end-date (f/parse jira-time-format end-date)]
     (get-time-series start-date end-date start-date [])))
  ([start-date end-date current-date series]
    (if-not (t/within? (t/interval start-date end-date) current-date)
      series
      (recur start-date
             end-date
             (-> current-date (.plusDays 1))
             (conj series (f/unparse short-time-format current-date))))))

(get-time-series "2017-01-01 22:46" "2017-01-13 17:00")
; ["2017-01-01" "2017-01-02" "2017-01-03" "2017-01-04" ... ]