On Friday, especially in Aceh, all fishermen's activities did not go to sea, on that day (Friday) the Acehnese fishermen took the time to fix the device (sailing instruments) like loud, boats, and other equipment.
As you can see in this post, the Acehnese people are grouped to improve the loudness to catch fish, because every Friday, Acehnese people do not go fishing (fishing), thus, on that day, the tool society chooses and uses that time to improve the tool looking for their damaged fish.