Time frames

by Admin
Updated: July 17, 2018

Here is a list of approximate time frames for better planning and a happier existence

The human brain is prone to error when it comes to assessing time. This in-progress list of time frames is intended to provide some alternative perspectives, cross-checks against bad estimations and, possibly, inspiration for future articles.

A few of these time frames are accurate, many are approximate (rounded, averages, based loosely on experience) and some serve to illustrate a point.


A lifetime is approximately 15 years, starting from age 5.

A generational cohort lasts about 20 years:

Boomers: 1945-1965
Gen X: 1965-1985
Millennials: 1985-2005
Centennials: 2005-2025

At age 20, a year is 5% of your life. At age 80, it is just 1¼%.

Business & finance

It takes 5 years to build a business and most of the good stuff happens in the 5th year.

If you can double your money every day, it will take only 27 days to turn $1 into more than $1 million.

It takes 7 years to establish a credit history.

Mind & body

It takes about a month to make or break a habit.

It takes about 60 days to fully regrow an eyebrow.

What you think you’re seeing at any given time is a filtered average based on the last 10-15 seconds.


The optimum launch window for traveling to Mars occurs once every 26 months.

Flying to Mars will probably take about 9 months.

The minimum time lag calling Mars is a little over 3 minutes.

A day on Mars is only 40 minutes longer than a day on Earth.

More info

“An Intro To Generations” at genhq.com.

“Is It Worth the Time?” at explainxkcd.com.

“Brain ‘15-second delay’ shields us from hallucinogenic experience” at rt.com.

“How Long Does It Take to Get to Mars?” at space.com.

Internal links

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