Problem with using function setAlarm1

[piolin798]

Hi, I´m trying to set an alarm so it is triggered at a specific day of the week e.g. every monday, using function "setAlarm1". However, when I open the serial console, day appears as "unknown".

// Set Alarm - 10h:45m:30s in every Friday (1 - Mon, 7 - Sun)
//setAlarm1(Date or Day, Hour, Minute, Second, Mode, Armed = true)
clock.setAlarm1(7, 15, 40, 15, DS3231_MATCH_DY_H_M_S);

Please tell me how this could be solved.