Smith - Monday night - Bank holiday
Tabram - Monday night - Bank holiday
Nichols - Thursday night
Chapman - Friday night
Double event - Saturday night
Kelly - Thursday night / Friday morning - unofficial holiday
MacKenzie - Tuesday night
Coles - Thursday night
I personally believe that the person who killed both Polly then Annie was out a lot at night before he ever tried anything. Sizing up what he would need to do or bring, where he would likely find his prey, and around what times were the streets least observed by the general public and night workers. Might have been one himself, and went right on to finish work after Polly.
I believe Opportunity dictated when Polly and Annie would be killed.
Ive often asked-where was he in the middle of the month? other than the weekends and holidays, I think this is the next most pertinent question, and may again, have to do with what type of work he did.
__________________ "Is all that we see or seem
but a dream within a dream?"
-Edgar Allan Poe
"...the man and the peaked cap he is said to have worn
quite tallies with the descriptions I got of him."
-Frederick G. Abberline
We tend to think of the times as something pertaining to Jack himself but the times could have involved other people like the need for family to be out of the way.
Absolutely - the patterns might reveal less about him as such, as about those around him. For example, if he were a lodging-house dweller, there may have been times when his co-dossers would have been less likely to notice his absence. If, that is, they were in a position to have missed him in the first place: with so many "transients" around, this might have worked in his favour.