“Calculation Date” means # the last calendar day of each month (or, if such day is not a Business Day, the next succeeding Business Day) and # at any time when a Default or Event of Default shall have occurred and be continuing, any other Business Day which the Administrative Agent may determine in its sole discretion to be a Calculation Date.

“Calculation Date” means # the last Business Day of each calendar quarter, # each date (with such date to be reasonably determined by the Administrative Agent) that is on or about the date of # a Borrowing Request or an Interest Election Request with respect to any Revolving Loan or # the issuance, amendment (including, without limitation, the date of any amendment increasing the amount of any Letter of Credit), renewal or extension of a Letter of Credit, # solely with respect to Letters of Credit, the first Business Day of each calendar month, and # if an Event of Default has occurred and is continuing, any Business Day as determined by the Administrative Agent in its sole discretion.