Matched endpoints,Exact span
4837t BC → 7t BC,4837 − 7 = 4830
4830t BC → AD 1t,4830 + 1 − 1 = 4830
4836n BC → 6n BC,4836 − 6 = 4830
4829n BC → AD 2n,4829 + 2 − 1 = 4830