Online alarm clock for 3:54 am
Finish pulling on your boots and gathering what you need before heading out to check lambing on the Canterbury farm. Set the alarm for 03:54 as the final cue to leave, rather than stopping midway through another job. That gives you a clear departure point before 04:00, with enough time to pocket your keys, take a torch and step outside without rushing.
While you make those last preparations, keep the alarm page in the foreground if possible. Moving to another tab does not necessarily cancel the timer, but browsers can reduce activity on pages left in the background, particularly when a phone starts conserving power. Check that the volume is audible and return to the alarm page before putting the phone down. If you close the page or let the phone sleep, the alarm cannot sound, so the lambing check could be missed.
Before crossing the dark yard at this hour, arrange the light you will use rather than relying on whatever is nearest at 03:54. Place a charged torch beside your boots, point it away from sleeping stock, and choose a lower beam for close work. Canterbury mornings can still be fully dark near 04:00, so having the gate latch, path and shed entrance lit in advance makes the departure simpler.