Fridays and Holidays excluded or Fridays and holidays included (FHEX or FHINC).
Exceptions can be made in a charterparty to the calculation of laytime and time used by the charterer, either for loading or discharging or even waiting far berth. Generally these exceptions are related to “Sundays and holidays”. However, in Islamic countries, Friday is a special day, equivalent to Sundays in non-Islamic countries, and when a ship is fixed to trade with Islamic countries, this term is used.
Just as with SHEX or SHINC, qualifications to the exceptions may be found, as for example, “unless used” or “even if used”.