David Drumm is set to miss out on seeing his family on Christmas Day due to strict visiting rules at the US prison where he is incarcerated.
The former Anglo Irish Bank boss is being held at the maximum security Plymouth County Correctional Facility, around 60 kilometres south of Boston.
Inmates there are only allowed visits on two days each week, with the days being decided based on their surname.
Prisoners whose last names begin with the letter "A" through "L" are allowed visits on Tuesdays and Saturdays, meaning Mr Drumm will have to wait until St Stephen's Day for a Christmas-time visit from his wife Lorraine and their two daughters.
The 49-year-old, who has been given the prisoner number 68201, is expected to remain at the prison until at least March, when his extradition case is due to be heard. He is fighting against an application for his repatriation to Ireland, where he is facing 33 charges, including ones for fraud and false accounting, dating from his time at the helm of Anglo.
Other high-profile inmates held at the facility in the past have included notorious mob boss James 'Whitey' Bulger and the former President of Liberia, Charles Taylor.
The prison operates strict rules in relation to visits, with each visitor having to go through a rigorous pre-approval process involving a background check for criminal history.
Birth certificates must be produced to prove a child is related to an inmate before they are allowed to visit.
There are also strict requirements in relation to the clothes that visitors can wear.
The facility has a list of clothing which is not tolerated, ranging from T-shirts with printed words or images which may be deemed offensive, to neck ties, flip-flops and sandals.
Immodest clothing, such as tops showing cleavage or mini-skirts, are also prohibited. There is also a specific ban on 'Daisy Duke shorts'.
Mr Drumm expressed unhappiness with the regime at the prison during his failed bid to secure release on bail, describing it as "uncomfortable".
However, a judge ruled that the fact jail is unpleasant did not amount to a special circumstance warranting Mr Drumm's release. Mr Drumm was also denied bail because he was considered a flight risk.
The judge found his background and experience in international matters, as well as the presumption he had substantial assets at his disposal, provided him with the ability to flee if he was so inclined.
The decision to deny him bail was a major blow to the former Anglo boss, who had offered to be placed under house arrest and electronically monitored.
Three friends also agreed to put forward their homes as collateral to guarantee his release.
Mr Drumm has been in custody since being arrested by the US Marshals Service at his $2m (€1.75m) home on the outskirts of Boston on October 10.
He and his family have been living in Massachusetts since 2009, the year after he quit Anglo.