The longest documented time interval between the birth of twins is 87 days. This unusual case occurred in 2012 when a woman in Ireland gave birth to one twin prematurely, and the second twin was delivered nearly three months later. Such extended intervals are extremely rare and typically involve medical intervention to prolong the pregnancy of the second twin.
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Ferternal twins don't look alike, but twins do
Fraternal twins are two siblings that have the same birth day, but do not look identical.
Women who are themselves fraternal twins have a 10% chance of producing twins, identical twin women have only a 0.6% probability of having a twin birth.
Yes, almost always. If the birth happens near midnight then it would be possible for twins to be born on different days.
Identical twins come from one egg and one sperm. Fraternal twins come from two eggs and two sperm.