Analog Time vs. Metric Time

Author’s Note: It’s come to my attention that this page has been indexed by at least one search-engine, and while I’m OK with that, it means that some people may end up here unaware of the context. This page contains technical background from The Version Sequence, a six-volume series of science fiction novels set roughly two hundred years in the future.

Overview

“Analog time” refers to the way hours, minutes, and seconds were displayed and recorded prior to midnight on January 1, 2089. Under “analog time”, each day had 24 hours, each hour 60 minutes, and each minute 60 seconds. Under “metric time” (also called “digital time”), each day has 10 hours, each hour 100 minutes, and each minute 100 seconds. The terms “analog time” and “metric time” are actually misnomers, and date back to references in the news media at the time of the changeover.

Standards

Under Metric Time, the time of day is commonly written as part of the date. For example, twenty minutes past noon on April twenty-first two thousand eighty-nine would be written as “April 21.520, 2089”. Other written date notations are available. The punctuation used in these alternate notations to separate year, month and day, varies, depending on the locale. While it is permitted to eliminate separators entirely (in which case, month and day must appear with two digits, as in “20890421.520”), the United States favors the forward slash (e.g. “2089/4/21.520”), the European Union favors the colon (e.g. “2089:4:21.520”), and both the African Republic and Sino-Japanese Confederation have standardized on the minus (e.g. “2089-4-21.520”). Formatting standards require that, if the time is included with the date (it is optional), it is always shown to at least three decimal places.

Analog Time

Metric Time
Analog Time
Metric Time

              Midnight 12:00

0.00

Noon 12:00 pm

5.00

12:05

0.03

12:05 pm

5.03

12:15

0.10

12:15 pm

5.10

12:30

0.21

12:30 pm

5.21

1:00

0.42

1:00 pm

5.42

1:30

0.62

1:30 pm

5.62

2:00

0.83

2:00 pm

5.83

2:30

1.04

2:30 pm

6.04

3:00

1.25

3:00 pm

6.25

3:30

1.46

3:30 pm

6.46

4:00

1.67

4:00 pm

6.67

4:30

1.87

4:30 pm

6.87

5:00

2.08

5:00 pm

7.08

5:30

2.29

5:30 pm

7.29

6:00

2.50

6:00 pm

7.50

6:30

2.71

6:30 pm

7.71

7:00

2.92

7:00 pm

7.92

7:30

3.12

7:30 pm

8.12

8:00

3.33

8:00 pm

8.33

8:30

3.54

8:30 pm

8.54

9:00

3.75

9:00 pm

8.75

9:30

3.96

9:30 pm

8.96

10:00

4.17

10:00 pm

9.17

10:30

4.37

10:30 pm

9.37

11:00

4.58

11:00 pm

9.58

11:30

4.79

11:30 pm

9.79

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s