Dragons Are Real

Custom Calendars

I have run a couple campaigns where I decided to design a custom calendar, I find it quite rewarding to develop a list of names for days and months that gives a flavour to the world.

The Southlands of Blackmarsh

Back in 2025 I was running a Shadowdark campaign set in Rob Conley's Blackmarsh

Days of the Weeks

I quickly decided I wanted a standard 7 days and I did not want to stray too far from the typical days of the week.

Months

Each mont lasts 30 days exactly, no variance, no leap years and no intercalary days giving us 360 days a year.

Spring

Summer

Autumn

Winter

Moon cycles

I cribbed a typical moon cycle here in Earth with a 32 day cycle:

The Wild North

Early in 2026 I decided to run another campaign in the Majestic Realm setting moving from the Southlands to The Wild North. As these were wild inhospitable places on the frontier with tribes and outposts across the region I decided to go back and look at changing my previous calendar.

Days of the Week

The only change I made was changing Truceday (Thu) to Oathday, it sounded a lot more plausible for people in the Region taking Oaths to each other.

Months

I stuck with 30 days a month as it makes it easier. But as the Region was further North and similar in climate to Finland and seasons are different length I reworked the previous month list. Sunrise and sunsets are in brackets.

Spring (05:00 - 19:00)

Summer (03:00 - 22:00)

Autumn (06:00 - 18:00)

Winter (09:00 - 15:00)

Moon Cycles

I dropped the moon cycles from 32 days to 30 so they would match the days of the month. It also means that the New Moon is always on the first day of the month and the full moon is on the 16th, which it makes it easier to work out the moon phases (which is handy on a Virtual Table Top for lighting)

Conclusion

This was a ton of fun to do, but was the time spent on it appreciated by the players. In all honesty, no. The players couldn't care less what the name of the days and month were but I gained alot of satisfaction from the time I spent on it. I still think it gives flavour to the setting but also it grounds the world in details that makes it feel more alive.

#blackmarsh #gm