COMMON

COMMON — a day in centidies and this month

A pixel-art ghost haunting a glowing pumpkin, with two bats

31 October / After dark

The witching hour.

Time flies. So do the bats.

Happy Halloween. Tap the ghost above to escape.

A pixel-art snowman with a red scarf beside a decorated Christmas tree and two gifts

25 December / Midwinter

A quieter rhythm.

The year turns. The light returns.

Merry Christmas. Tap the tree in the header to return.

01 / The clock

Live

The centidies dial

Analog decimal clock A dial with 100 divisions and ten numerals, 0 through 9. Read the numeral each hand has passed: the shortest bold hand gives hundreds of millidies, the medium tailed hand gives tens, and the longest cobalt hand gives units. At 387 millidies the hands spell 3, 8, 7: 38.7 centidies. One turn takes a day, 100 millidies, and 10 millidies respectively. There is no seconds hand.

0.0 centidies

Centidies 000 millidies

Adds a dashed fourth hand and two digits for hundredths of a millidie. Read this hand from the 100 fine ticks. Each tick is one beat, exactly 0.864 s; one turn takes 100 beats (86.4 s). Off by default.

One day is 100 centidies or 1,000 millidies. Midnight is 0.0 centidies; noon is 50.0 centidies.

--:--:-- ordinary

Local—

One day. Hundredths. Thousandths. Beats.

How the dial works →

02 / This month

MONTH 01 / 13

January

2026

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January 2026, International Fixed Calendar
Mon Tue Wed Thu Fri Sat Sun

Gregorian · —