---
name: gmtime
status: documented
runtime: pp
source: src/runtime/pp/time.rs
---
```{index} single: gmtime; Perl built-in (pp runtime)
```

# gmtime

## Synopsis

```perl
my @t = gmtime(0);     # (0,0,0,1,0,70,4,0,0) - epoch in UTC
my $s = gmtime(0);     # "Thu Jan  1 00:00:00 1970"
my @t = gmtime();      # current time in UTC
```

## Description

Converts a Unix timestamp to UTC (Greenwich Mean Time), returning
the same structure as `localtime` but without timezone or DST
adjustments.

Identical to `localtime` in interface, but all values are in UTC
rather than the local timezone.  The `$isdst` field is always 0.
If called without an argument, uses the current time.

The implementation uses a pure-Rust UTC calculation (no libc
dependency), correctly handling negative timestamps (dates before
the epoch) and leap years.

## See also

localtime, time, POSIX::strftime