1 century = 3,153,600,000 s ÷ 24,192,000 s per human pregnancy = 130.4 → 130

• ~280 days

1 century = 3,153,600,000 s ÷ 126,144,000 s per Olympiad = 25 → 25

• four years between Games

1 century = 3,153,600,000 s ÷ 88,775 s per Martian sol = 35520 → 35,524

• a day on Mars

1 century = 3,153,600,000 s ÷ 15,778,800 s per Friedman unit = 199.9 → 200

• six months, the perennial 'next six months'

1 century = 3,153,600,000 s ÷ 315,360,000 s per decade = 10 → 10

• en.wikipedia.org