And the numbers of the zodiac (from 1-12, can repeat itself), each number is a sign. Not sure it's a lucky number, but in numerology it is from 1-9. I guess a sign can have 1-3.33 (10th/3rd sign), 3.33-6.66 (11th/2nd) and 6.66-9.99 (12th/1st - the beginning and end, alpha and omega, and start and finish).
1, 13, 25, 37, 49, 61, 73, 85 - Aries (#1 or 13)/Pisces (#25 or 49).
2, 14, 26, 38, 50, 62, 74, 86 - Taurus/Aquarius.
3, 15, 27, 39, 51, 63, 75, 87 - Gemini/Capricorn.
4, 16, 28, 40, 52, 64, 76, 88 - Cancer (#88)/Sagittarius (#40).
5, 17, 29, 41, 53, 65, 77, 89 - Leo/Scorpio.
6, 18, 30, 42, 54, 66, 78, 90 - Virgo (#6)/Libra (#66).
7, 19, 31, 43, 55, 67, 79, 91 - Libra/Virgo.
8, 20, 32, 44, 56, 68, 80, 92 - Scorpio/Leo.
9, 21, 33, 45, 57, 69, 81, 93 - Sagittarius (#3 or 33)/Cancer (#9 or 69).
10, 22, 34, 46, 58, 70, 82, 94 - Capricorn/Gemini.
11, 23, 35, 47, 59, 71, 83, 95 - Aquarius (#23)/Taurus(#47).
12, 24, 36, 48, 60, 72, 84, 96 - Pisces (#12)/Aries(#24).
In a 100-year century, the years 97 (Aries-Gemini), 98 (Cancer-Virgo), 99 (Libra-Sagittarius) and 100 or zero-0 (Capricorn-Pisces) divided by 3.33. For a 1000-year millennia made of centuries: 10 Aries/Taurus, 11 Gemini, 12 Cancer, 13 Leo, 14 Virgo, 15 Libra, 16 Scorpio, 17 Sagittarius, 18 Capricorn and 19 Aquarius/Pisces. And finally, 2000 year ages can be for every 2 centuries.