import datetime
ts = 2545948799
dt = datetime.datetime.utcfromtimestamp(ts)
print(dt) # 2050-09-04 23:59:59const ts = 2545948799;
const date = new Date(ts * 1000);
console.log(date.toISOString());
// 2050-09-04T23:59:59.000Zimport java.time.Instant;
import java.time.ZoneOffset;
long ts = 2545948799L;
Instant instant = Instant.ofEpochSecond(ts);
System.out.println(instant);
// 2050-09-04T23:59:59.000Z