Year 37 BC was either a common year starting on Monday , Tuesday or Wednesday or a leap year starting on Monday or Tuesday ( link will display the full calendar ) of the Julian calendar ( the sources differ , see leap year error for further information ) and a leap year starting on Monday of the Proleptic Julian calendar .
Year 37 BC was either a common year starting on Monday , Tuesday or Wednesday or a leap year starting on Monday or Tuesday of the Julian calendar .