checked some json I had from 1/27/2019
I don't see [MONDAY] in there.
{"postNum":304,"no":55699,"id":null,"name":"Q","trip":"!ITPb.qbhqo","text":"https://www.youtube.com/watch?v=chyHx0zKQGo\nThese people are sick.\nQ","board":"8chan_cbts","threadID":54929,"link":"https://8ch.net/cbts/res/54929.html#55699","references":[],"imageLinks":[],"time":1512768177,"deleted":false}