Web alarm clock for 5:08 a.m.
While you are sorting the catch and setting out trays after the fishing boats unload, a 5:08 am alarm gives you a clear signal to break away from the work. It can mark the point for opening the fish stall, checking the display, and getting ready for the first customers before 6:00 am.
With your hands occupied by crates, ice, and the morning catch, place your phone where the alarm will be easy to hear across the stall. Check whether audio has quietly switched to connected earphones; otherwise, the fish stall may stay unopened while the alert plays only through them. This browser alarm also cannot sound after its page is closed or if the phone goes to sleep, so the fish stall opening should have a separate alarm as backup.
Because 5:08 am is still early, decide beforehand whether you will stay up once the fish stall opens or return to bed after the setup is finished. If more sleep remains in your morning, prepare a second alarm for the time you need to rise again, and leave the next small tasks written down so you do not have to reconstruct them while drowsy.