Possible Clues:

• Half-yearly
• Happening twice a year
• Twice a year, bank review is new to the Irish in Holland
• Twice a year
• Occurring twice a year
• Every 26 weeks (... first 3)
• Criminal bail a nun furnishes once in six months?
• Every six months, bank does a review to start off year
• Every six months, a bun with nail is hammered
• Scotsman's stuck inside largely unable to shift periodical