import csv
import datetime

def fun(filename):
    f = open(filename)
    data = list(csv.DictReader(f))
    for i in data:
        dt = datetime.datetime.strptime(i['starttime'], "%m/%d/%Y %H:%M")
        print(dt.strftime("%d-%m-%Y %H"), 1)
    f.close()

if __name__ == '__main__':
    fun('Путь до csv файла')