Lucius Tarutius Firmanus
Lucius Tarutius Firmanus (or Lucius Tarutius of Firmum) (unknown-fl. 86 BC) was a Roman philosopher, mathematician, and astrologer (Taruntius or Tarrutius are also used, but are incorrect).

Tarutius was a close friend of both Marcus Terentius Varro and Cicero. At Varro's request, Tarutius took the horoscope of Romulus. After studying the circumstances of the life and death of the founder of Rome, Tarutius calculated that Romulus was born on March 24 (when the date is correctly translated from the Egyptian calendar) in the second year of the second Olympiad (i.e. 771 BC). He also calculated that Rome was founded on 4 October 754 BC, between the second and third hour of the day (Plutarch, "Rom.", 12; Cicero, "De Divin.", ii. 47.). 
The proximity of this date to an eclipse was discussed by Scaliger.

The crater Taruntius on the Moon is named after him.
Q13139
Firmum
LOC
Q1747689
Roman
LOC
Q4964182
philosopher
Concept
Q170790
mathematician
Concept
Q34362
astrologer
Concept
Q206119
Marcus Terentius Varro
PER
Q1541
Cicero
PER
Q188518
horoscope
Concept
Q2197
Romulus
MISC
Q221956
Olympiad
Concept
Q41523
Plutarch
PER
Q315163
Scaliger
PER
Q1312774
Taruntius
LOC
Q405
Moon
CEL
Q138724
Lucius Tarutius Firmanus
PER
+86^^http://www.w3.org/2001/XMLSchema#decimal
86
NUMBER
+24^^http://www.w3.org/2001/XMLSchema#decimal
24
NUMBER
+12^^http://www.w3.org/2001/XMLSchema#decimal
12
NUMBER
+47^^http://www.w3.org/2001/XMLSchema#decimal
47
NUMBER
place of birth
country of citizenship
occupation
occupation
located on astronomical body