Seconds to clock time

$t$ seconds have passed since the start of the day (00:00:00). Print the current time as HH:MM:SS.

A single integer $t$ ($0 \le t < 86400$).

The time as HH:MM:SS: hours, minutes and seconds with two digits each, padded with a leading $0$ when needed (for example, 07:05:09).

Hours are $t$ integer-divided by $3600$, minutes are the remainder of $t$ divided by $3600$, integer-divided by $60$, and seconds are the remainder of $t$ divided by $60$.

Two-digit output: Python — f"{h:02d}", C++ — printf("%02d", h), Go — fmt.Printf("%02d", h).