Web alarm clock for 12:08 p.m.
Pause what you are doing and set the alarm for 12:08 pm so you can break away in time to meet the school boat at the village jetty. With 1:00 pm still ahead, you have room to finish the part of the task that cannot be left halfway, gather what you need, and leave without watching the clock every few minutes.
Your school boat pickup depends on the browser remaining active until the alarm sounds. If your phone goes to sleep or you close this page, the alert may not happen, leaving you late at the jetty. Keep the screen awake, leave this page open, raise the volume, and avoid silent mode. A separate phone alarm is a sensible backup if you need to put the handset away while finishing your work.
Meeting the school boat around midday means allowing for the actual trip to the jetty, not just the usual travel time. Roads through the barangay may be busier near lunch, while a tricycle or jeepney can involve a short wait. Work backwards from the boat's expected arrival, include walking time from the road to the landing, and add a small margin so you are already by the water when it approaches.