John Glenn

D.O.B

Died

Monday July 18, 1921

Thursday December 8, 2016

Next unlived
birthday in

Age in day of death

years

months

days

Age if still alive

103

years

months

days

Basic information

AKA
John Herschel Glenn Jr.
Category
PoliticianOthers
Subcategory
AstronautPolitician
Country
United States
Birth place
 Cambridge, OH
United States Corps aviator, engineer, astronaut, businessman and politician.  He flew into space again at age 77.
Served  as US Senator from Ohio from 1974 to 1999 
Find more information about John Glenn on Wikipedia

Half birthday

Next half birthday falls on

Saturday January 17, 2026

It is going to happen in

Let's calculate your combine birthday with John Glenn and 25 interesting calculations from your date of birth.

Age in different time units

Interesting calculations/facts about John Glenn

Generation: The Greatest Generation (1901-1927)

Zodiac sign: Cancer ♋ (June 21 - July 22)

Chinese zodiac sign:

Nr. of Heartbeats: 4,368,384,000

Nr. of Breaths: 887,328,000

Nr. of blinks (with 8 hours of sleep every day): 614,304,000

Hair length (if it was never cut): 1,580 cm or 15.80 meters (51 feet 10.1 inches)

Nail length (if it was never cut): 4,424 mm or 4.42 meters (14 feet 6.2 inches)

Animal Age

How old John Glenn would be if they were an animal.

Dog

17.55 years

Cat

21.93 years

Turtle

258.82 years

Horse

39.48 years

Cow

29.25 years

Elephant

70.19 years

Planet Age

How old John Glenn would be if they were born on a different planet

Mercury

431.06 years

Venus

168.76 years

Mars

55.2 years

Jupiter

8.75 years

Saturn

3.53 years

What happened on John Glenn birthday

Birthdays: Vin Diesel, Yevgeny Yevtushenko, Richard Branson, Phyllis Brooks, Elsa Pataky

Deaths: Nico, Richard Ney, Jack Hawkins

What happened on John Glenn day of death

Birthdays: Jean Sibelius, Maximilian Schell, Mark Steyn, John Banville, Teri Hatcher

Deaths: John Lennon, Golda Meir, William Shawn

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Kurt Cobain, Elon Musk, Walt Disney, Elvis Presley, Donald Trump

Celebrate NOW

John Glenn - Celebrations from his DOB

25 days from now, June 8, 2025, John Glenn celebrate 259^th turtle age
54 days from now, July 6, 2025, John Glenn celebrate 169^th Venus age
66 days from now, July 18, 2025, John Glenn celebrate 104^th birthday
80 days from now, August 1, 2025, John Glenn celebrate exactly 38,000 days
82 days from now, August 3, 2025, John Glenn celebrate 432^nd Mercury age
113 days from now, September 3, 2025, John Glenn celebrate 22^nd cat age
128 days from now, September 18, 2025, John Glenn celebrate exactly 1250 months
170 days from now, October 30, 2025, John Glenn celebrate 433^rd Mercury age
172 days from now, November 1, 2025, John Glenn celebrate 260^th turtle age
249 days from now, January 16, 2026, John Glenn celebrate 105^th half birthday

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