CASIO HQ-31, strange calculator/calendar

[xerxes]

(04-28-2022 05:50 PM)Dan C Wrote:  Yes, i have tried to set the date as 20220427, but the machine does not accept this format.
It only accept 220427, and then "adj/set" button.

Some Casio and Sharp calculators of that time accept the long format. In case of HQ-31 I would use a simple workaround: "year-28" or in 6 years "year-56" to have the correct display of the sundays.