docs/reference/kernel_objects/time.md

# Time units

## Userspace exposed time units

*zx\_time\_t* is in nanoseconds.

Use [`zx_clock_get()`] to get the current time.

## Kernel-internal time units

*lk\_time\_t* is in nanoseconds.

To get the current time since boot, use:

```
#include <platform.h>

lk_time_t current_time(void);
```

[`zx_clock_get()`]: /docs/reference/syscalls/clock_get.md