Currency, Time Units and Duodecimal Numbers

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After dropping of Hector at Eisal Village Hector asks me about going hunting in the forest the day after tomorrow.

“Hunting? I didn’t know you were a hunter!”

“Even if I’m just a kid if have to do my part for the village. We are a small village, so it’s a given we help each other. Money is only used by the Elder when traders come to the village. If you need something special, the Elder can get it for you.”

“I see. Who else will be coming with us?”

“It’s just the two of us. The adults have a hunting group as well. But already they went hunting today.”

“Is that OK, going without the adults?”

“Don’t worry! Avan Forest is quite safe.”

“I see. Then see you the day after tomorrow!”

“See you! Be here at nine.”

I return to the Divine Tree and tell Granny I have gained the Mana Perception Skill.

“That’s fast. Did you max it out yet?”

“Not yet. There’s something else I wanted to confirm.”

I start putting points into the skill.

One (1), two (2), three (3), four (4), five (5), six (6), seven (7), eight (8), nine (9), ten (X), eleven (E), twelve (10). Done. For some reason, my interface uses a base-twelve numeric system.1

“Ah, I’ve gotten used to it for so long I simply forgot the Old World used that nonsense of a Decimal System.”

“How come? As far as I have seen nobody has six fingers per hand.”

“Well, you count the sections of your non-thumb fingers.”

I try it myself. My index finger has three sections. So with the other fingers so I get to twelve.

“If you look at it going from this, it seems reasonable.”

“You’d be surprised to see how much the Duodecimal System was used in the Old World.”

“It was?”

“Yes. For example, if you divide a foot by twelve you get an inch. If you divide that again by twelve you a point. There was no French Revolution in this world. Instead, the Merchant Guild decided how to run the books. And they agreed it would make much more sense to use a base twelve system. Talking about merchants, I should teach you about the money around here. You shouldn’t be needing it that soon but it doesn’t hurt to learn.”

Granny takes out something out of nowhere. She places several metal coins and some metal bars on the table. She points to the copper coins. There are 3 round ones in different sizes and a long one, like a Japanese koban coin, just made of copper.

“The smallest unit is a Small Copper Coin. One of that is worth one credit. A Medium Copper Coin is worth three credits. A Big Copper Coin is worth twelve. Finally, a Long Copper Coin is worth trido credits.”


“That’s three dozen. Twelve (10), twendo (20), trido (30), fourdo (40), fifdo (50), sixdo (60), sevendo (70), eightdo (80), ninedo (90), tendo (X0), eldo (E0), a gross (100).”

Seems like I have to learn the numbers. But since I’m high level. I already have memorized the terms. I just need to get used to it so I don’t have to convert it to decimal internally.

“I think I need to get used to that. So how many minutes are an hour and how many hours a day?”

“One hour is sixdo (60) minutes. And one day is twendo (20) hours.”

So it’s 72 minutes per hour and twenty-four hours per day.

“One week has six days. There’s no Saturday. Five weeks make a moon. Twelve moons make a year.”

So a six day week. It’s like in the farming simulation games2 I used to play? So thirty, I mean twendo-six (26) days make a moon, and three hundred and sixty, I mean two gro sixdo (260) days make year.

“Are there leap days?”

“Leap days? Not really.”

“So there’s not the problem that the seasons move around in the calendar?”

“No, they don’t. Is it that surprising? I mean, you have a Gaming Interface.”


“Back to the money: basically, the other coins are in similar steps just they’re worth more. When you get to the bars the steps change to a fixed factor of twelve (10) since by that amount money, day-to-day convenience isn’t that much of issue anymore. Also, you usually aren’t likely to use them. I just showed them to you as a reference.

So in summary. The units are as follows:

Small Copper Coin1
Medium Copper Coin3
Big Copper Coin10
Long Copper Coin30
Small Silver Coin100
Medium Silver Coin300
Big Silver Coin1,000
Long Silver Coin3,000
Round Gold Coin10,000
Long Gold Coin30,000
Round Platinum Coin100,000
Long Platinum Coin300,000
Small Gold Bar1,000,000
Large Gold Bar10,000,000
Small Platinum Bar100,000,000
Large Platinum Bar1,000,000,000

As a result of that conversation, I practice the new numbers and I completely forgot what I wanted to ask earlier the day. If it’s important I’ll probably remember it later.