Web alarm clock for 5:13 a.m.
Preparing at 5:13 am gives you breathing room before you have to clear security for the first inter-island flight. Set the alarm now while checking your ID, boarding details, and baggage, rather than leaving it until departure morning. A ring before 6:00 am can keep the trip to the terminal and the screening queue from becoming a rush.
Your security screening depends on a reliable wake-up, so leave this alarm page open after choosing 5:13 am and keep your phone or computer awake. If you close the tab or browser, the alarm will not sound; it also cannot wake a sleeping device, which could leave too little time to pass screening before boarding. Keep the volume audible, and use a separate alarm as backup when missing the flight would disrupt your island connection.
Getting ready for airport security this early can happen while the neighbourhood is still quiet, but traffic, tricycles, household activity, and terminal noise may build as 6:00 am approaches. Place your phone close enough to hear at the lower background level around 5:13 am, without putting it beneath clothes or inside your packed bag. If an electric fan or air conditioner masks soft sounds, choose a clear alarm tone and test its volume before settling down.