Web alarm clock for 1:50 a.m.
You are getting the ice ready well before it is needed at the morning fish market, so a 1:50 am alarm gives you a clear point to begin the final preparations. The ten minutes before 2:00 am are enough to check the sacks, clear space in the cooler, and make sure the containers are within reach.
While you arrange the ice, the alarm page can remain behind another browser tab as you check a message or weather update. Keep the browser running and allow sound, since closing the alarm page or letting the phone go to sleep can leave the ice preparation without the reminder you expected. Before turning away, raise the volume and test that you can hear it over an electric fan or a humming freezer.
Once the ice is sorted at 1:50 am, keep the next part of the job brief and leave yourself a realistic chance to sleep again. Set out only what the early market run requires, dim the room, and avoid starting another lengthy chore. A second labelled alarm for your departure can separate this short preparation from the rest you still have before dawn.