Robert Mark Isaac (born July 27, 1954) is an American academic known for his research in experimental economics, focusing on fundamental microeconomic issues. His innovative work has shed light on many longstanding economic challenges, especially related to cooperation and collective action. Through empirical investigation, Isaac has advanced the understanding of how individuals and groups make economic decisions, contributing valuable insights to both theory and practice in the field of economics.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 343 days away.
Place of Birth
Time Zone -
Chinese Zodiac Sign
Birth Number
Life Path Number
Name Number (Chaldean)
Name Number (Pythagorean)
July 27, 1954 Facts
Generation Group
R. Mark Isaac belongs to the Baby Boomers group.
Educated At: California Institute of Technology
Occupation: economist
Employers: Florida State University | University of Arizona
Astrology Analysis
Note: This birth chart is calculated using the date and place of birth, with the time set to noon (12:00 PM) local time. While this provides accurate planetary positions for most celestial bodies, the Ascendant (Rising Sign) and house cusps are not calculated since they require precise birth time. For a complete astrological analysis including houses and rising sign, please provide the exact birth time.

Ephemeris for July 27, 1954
Note: Moon position is location and time sensitive.Planet | Position (Tropical, Western) | Transits on July 27, 2025 | Secondary Progressions for July 27, 2025 |
---|---|---|---|
Sun | 4 Leo 6 | 4 Leo 55 | 12 Libra 54 |
Moon | 5 Cancer 49 | 10 Virgo 48 | 0 Aquarius 6 |
Mercury | 14 Cancer 23 | 12 Leo 6 | 8 Scorpio 16 |
Venus | 16 Virgo 20 | 26 Gemini 1 | 23 Scorpio 58 |
Mars | 25 Sagittarius 34 | 23 Virgo 40 | 20 Capricorn 45 |
Jupiter | 14 Cancer 15 | 10 Cancer 48 | 27 Cancer 6 |
Saturn | 3 Scorpio 31 | 1 Aries 38 | 9 Scorpio 6 |
Uranus | 24 Cancer 4 | 0 Gemini 48 | 27 Cancer 23 |
Neptune | 23 Libra 25 | 2 Aries 1 | 25 Libra 19 |
Pluto | 24 Leo 0 | 2 Aquarius 31 | 26 Leo 8 |
Rahu | 13 Capricorn 44 | 20 Pisces 29 | 9 Capricorn 59 |
Ketu | 13 Cancer 44 | 20 Virgo 29 | 9 Cancer 59 |
Chandra Kundali (Equal House, North Indian Diamond Chart)

Astrology Transits Analysis for Year 2025
Note: Multiple transits occurring in close proximity often signify a major event in a person's life.R. Mark Isaac's 2025 Transits to Natal Planets
- Saturn opposition Venus
Exact: 31 January, 2025 - Saturn square Mars
Exact: 11 April, 2025 - Jupiter opposition Mars
Exact: 21 May, 2025 - Jupiter trine Saturn
Exact: 30 June, 2025 - Jupiter conjunction Moon
Exact: 10 July, 2025 - Mars square Mars
Exact: 30 July, 2025 - Jupiter conjunction Ketu
Exact: 09 August, 2025 - Jupiter opposition Rahu
Exact: 09 August, 2025 - Jupiter conjunction Mercury
Exact: 19 August, 2025 - Jupiter conjunction Jupiter
Exact: 19 August, 2025 - Mars square Rahu
Exact: 29 August, 2025 - Mars conjunction Saturn
Exact: 28 September, 2025 - Ketu conjunction Venus
Exact: 28 September, 2025 - Saturn square Mars
Exact: 18 October, 2025