These are calendars that have certain days longer than 24 hours, usually 36 h or 48 h, to avoid the need for leap days and possibly to make the calendar perpetual.
Longer days resulting from “daylight saving time” do not belong here.
All items (3)
These are calendars that have certain days longer than 24 hours, usually 36 h or 48 h, to avoid the need for leap days and possibly to make the calendar perpetual.
Longer days resulting from “daylight saving time” do not belong here.
All items (3)