Simplify the following text for a Grade 8 native English-speaking person.
Original: Year 2 ( II ) was a common year starting on Sunday or Monday ( link will display the full calendar ) of the Julian calendar ( the sources differ , see leap year error for further information ) and a common year starting on Sunday of the Proleptic Julian calendar .
Simplified: The year 2 ( II ) was a common year that started on Sunday , according to the Julian calendar .