| # 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()`]: syscalls/clock_get.md |