Timestamp and singlestat

Hello,
I’m trying to display the uptime of a server using Grafana and single stat.

In the influxDB i have this timestamp: 1572260885 and I’d like to visualize it in Grafana as human time.

In the Options tab if I specify as unit YYYY-MM-DD is displays me a date from 1970.

Do you know what i’m doing wrong ?

Thanks,
Antonio