I'm not sure specifically what stories are in 'one day isang araw stories' as it's not a widely known common collection to me. It could be a very specific or local set of stories.
It seems that Pulang Araw isn't based on a true story. It's likely a concoction of the author's imagination and story-telling skills to engage the audience.
The words 'araw gabi' are quite general. If it's a specific story from a particular region or community, we would need more details. For example, if it's a story passed down in a Filipino village, it might involve the activities that happen during the day and night in that village, like the day being for farming and the night for family gatherings around the fire, but again, this is just a made - up example based on the common meanings of the words.
I'm not sure specifically what the'minsan may isang gamu gamo story' is about as it's not a common well - known story title. It could be a very local or personal story. Maybe it's about a unique encounter with an animal named gamu - gamo once upon a time.
Another theme could be economic survival. The vendors in the palengke rely on the market for their livelihood. So the story may touch on how they make a living, deal with competition, and face economic challenges. For example, they might have to deal with fluctuating prices of goods or changing customer demands.