We used to test him with a perpetual calendar and he was never wrong.

Up to five alarm calls per day can be set and there's a perpetual calendar as well.

I consulted the perpetual calendar we had on the shelf.

With a seven-day week, we can have a perpetual calendar if each month has eight weeks.

I thumbed to the index and found the page numbers for a perpetual calendar.

She found a perpetual calendar once and seems to have memorized it."

Perpetual calendar designers hide the complexity in tables to simplify their use.

They would carve these stones into an egg shape and inscribe their perpetual calendar.

A perpetual calendar employs a table for finding which of fourteen yearly calendars to use.

It shows sunrise and sunset times, perpetual calendar, and astronomical moon.

This is particularly advantageous where a watch has complications, such as perpetual calendars or moon phases.

Bet he has that sad day circled in funeral black on his perpetual calendar.'

Other uses of the term "perpetual calendar"

The No. 2 watch, also in 18-karat gold, combines a split-second chronograph with perpetual calendar features.

Both were highly accurate clocks and perpetual calendars.

The watches had split seconds chronograph, minute repeater, and a perpetual calendar.

In 1999 the perpetual calendar received the added GMT indicator.

Their purpose, in part, is to eliminate the need for perpetual calendar tables, algorithms and computation devices.

"There is the project to increase our numbers, but that is thousand-year program; you'd need a perpetual calendar to check it.

It provides a perpetual calendar since the Gregorian calendar moves in cycles of 400 years.

In 1930, Sidis was awarded a patent for a rotary perpetual calendar that took into account leap years.

Certain calendar reforms have been labeled perpetual calendars because their dates are fixed on the same weekdays every year.

Another complication: The perpetual calendar tries, by the complexity of its development, to tame the time not yet elapsed.

She checked her perpetual calendar.

An early example of a perpetual calendar for practical use is found in the manuscript GNM 3227a.