Online alarm clock for 2:34 am
As you hand the Zealandia kiwi watch to the next observer at 2:34 am, set an alarm to mark the end of your part of the shift. It can keep the changeover from drifting while notes, sightings and torch gear are passed across. The remaining stretch before 3:00 am also gives the new observer time to settle quietly into position.
Before relying on the alarm for the kiwi handover, run a quick signal check while both observers are still present. Set a near-term test, confirm that the sound is clear, then restore 2:34 am and leave the volume at the tested level. The alarm cannot wake a sleeping phone or continue after the browser is closed, so the next kiwi observer could miss the changeover if it is left as the only safeguard.
Once the incoming Zealandia observer takes over, listen to the reserve before choosing where to keep the phone. Visitor noise and daytime activity have faded by this point of the night, making a sharp alarm more conspicuous and more likely to disturb the quiet watch. Keep the phone close enough to hear at a restrained volume, and use vibration if the surface will not rattle or amplify it.