saturday – shing-chee-lee-oh
Written as xīngqīliù or xingqiliu
Note: Saturday in Mandarin Chinese starts with "Day of the week" which we already know is shing-chee (xingqi).
Saturday is shing-chee-lee-oh (xingqiliu).
To remember that the end of the word Saturday is pronounced lee-oh (liu) use the following mnemonic:
She sat (Saturday) down on Leo (lee-oh) the lion.

Tones
Lee-oh (Leo) is a 4th tone with \ as an accent.
Associate Leo the lion, a 4th tone, with lowering things like trip or slide down. See Tones and Mnemonics.

She sat down on Leo the lion and the lion jumped down off the cliff.
Remember
Lee-oh = 4th tone = \
Examples of xingqiliu (Saturday) in sentences:
Jintain shi xingqiliu - Today is Saturday.
Mingtian shi xingqiliu ma - Is tomorrow Saturday?
Hunli hui zai xingqiliu juxing - The wedding will take place on Saturday.