OK we all know that El Al isn´t allowed to fly on Saturdays due to the Jewish religious laws.
But...El Al has a cargo subsidiary called CAL (or CAI, sorry I don´t remember well).
I had the chance to see CAL´s white-painted B747F´s flying on Saturdays at London Heathrow. Does CAL has a sort of waiver in Israel that allows them to fly during the Shabbat? (BTW, these Jumbo´s carry israeli reg´s. 4X-)