I predict around 2035 there will be a minor but annoying change.

Next century, so not near future, the leap seconds and leap days will break everything forcing a major calendar reform.

Interesting question. While I don't see a complete calendar overhaul anytime soon, I wonder if we'll see more region-specific tweaks to better align with local cultures and work patterns. For example, some Middle Eastern countries have already shifted their weekends to better sync with global markets. Maybe future tweaks will focus on optimizing productivity or aligning with the natural rhythms of remote work.

I don't expect calendars, or time keeping in general, to change too much until we have civilizations in multiple planets (if we ever reach that point anyway). And even then, I doubt much would change here on Earth.

I think if we reach that point, we would probably look at the Earth calendars the same way we currently look at the Latin language.

Damn, I was asking myself the same question and ended up making a 10-Day Week Calendar app: https://tendayweekcalendar.com/

Stardate -297628.38156392693

Please don't do a tech reinvent / reimagine of calendars to exactly how they are now but with ads and a monthly charge.

Swatch tried to use decimal time... https://en.wikipedia.org/wiki/Swatch_Internet_Time?wprov=sfl...

It's very possible that leap seconds will be a thing of the past. Those need active changes to the calendar, and there's every possibility that future generations will simply not care to make those adjustments.

Other than that, I don't think Gregorian calendars are going anywhere. Traditions have a way of overstaying their welcome, especially once they are automated.

'Day' as a subscription service.

If you don't pay, you will not get the new day.

It'll be crept in through a Total Recall style augmented sleep where a week long holiday seems teally only takes a night's sleep.

When normalised, leisure time will becme a subscription service.