We're wed to using years, and especially decades, as units to measure major milestones in our lives.
For birthdays each passing decade is noted: "My God I'm 40 years old," and so on. The 65th birthday is often a biggie, as are 16, 18 and 21.
Correspondingly, besides the decades of marriage, we especially note 25, 50 and 60 years of marriage.
But why only years? With Wolfram Alpha it's now easy to check when you reach milestones in other units of time like days, hours and minutes. To get started, simply enter your date of birth and Wolfram Alpha will tell you how long ago that date was in various time units.
In units of days here are some to think about:
- 10,000 days = 27.4 years
- 20,000 days = 54.79 years
- 25,000 days = 69.49 years
Those seem like worthy milestones of celebration to me.
Average life expectancy is around 30,000 days!! Try asking people at a party how many days they think they still have to live. A 55 year-old has an expectancy of around another 10,000 days. Most people guess a lot more than this.
Some noteworthy units of hours:
- 200,000 hours = 22.85 years
- 500,000 hours = 57.08 years
Almost no one has reached 1 million hours (114.2 years) – just two or three currently alive (reference).
The good news is than most people will get near the 40 million minutes and 2.5 billion seconds milestones.
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