date_str = [ '05.02.2021 04:49:00' '05.02.2021 05:50:00' '05.02.2021 05:51:00' '05.02.2021 05:52:00' '05.02.2021 05:53:00' '05.02.2021 05:54:00' '05.02.2021 05:55:00' '05.02.2021 05:56:00' '05.02.2021 05:57:00' '05.02.2021 05:58:00' '05.02.2021 05:59:00' '05.02.2021 06:00:00' '05.02.2021 06:01:00' '05.02.2021 06:02:00' '05.02.2021 06:03:00' '05.02.2021 06:04:00' '05.02.2021 07:05:00' ]; time_code = 1:17; ddd = datenum(date_str, 'dd.mm.yyyy HH:MM:SS'); figure(1) plot(ddd, time_code, '.-') datetick('x', "%d.%m. %H:%M");