George Haydock's Catholic Commentary
Daniel 12:30
The den of lions. Daniel was twice cast into the den of lions: once under Darius, the Mede, because he had transgressed the king's edict, by praying three times a day; and another time under Evilmerodac, by a sedition of the people. This time he remained six days in the lions' den; the other time only one night. (Challoner)