ConwayLife.com

You can backup an entire census by calling:

http://catagolue.appspot.com/backupcron ... g/symmetry

Backups are indexed by the date, so if two or more backups are generated on the same day, only the latest is retained. The backup can then be viewed by appending -todaysdate to the end of the symmetry type:

http://catagolue.appspot.com/census/b3s23/C1-2015-09-24

and you are free to explore the tabulations as usual. This syntax is also compatible with /textcensus as well, which is useful if you want to download a historical census:

http://catagolue.appspot.com/textcensus ... 2015-09-24

Backups for b3s23/C1 are generated automatically on a daily basis by a scheduled task. This runs at Ramanujan Standard Time (17:29 UTC) every day, beginning with 2015-09-24.

I'll work on implementing an interface so you can browse through historical backups of a particular census, instead of having to guess an exact date for which a backup exists.

Good feature, though wasn't someone else doing this from further back as well?

calcyman wrote:Ramanujan Standard Time (17:29 UTC)

Approve.

biggiemac wrote:

calcyman wrote:Ramanujan Standard Time (17:29 UTC)

Approve.

A very subtle reference. 17:29 UTC is clearly two digits in traditional Babylonian base 60, so that's 1049 in decimal, which is the number of the taxi that Hardy took in returning from visiting Ramanujan sometime or other.

Hardy got as far as figuring out that 1049 was the sum of an even power of an odd number plus an odd power of an even number, in at least two different ways, and then decided to leave that sort of thing to Ramanjuan and went to bed with a headache. Too bad he didn't have Google available, or he'd have known it was the smallest prime containing all square digits exactly once -- which still can't really compete with 12^3+1^3 = 10^3+9^3, anyway.

Any resemblance to real persons or events is purely coincidental.

biggiemac wrote:Good feature, though wasn't someone else doing this from further back as well?

Yes, there's an infrequent backup on http://mathandnumberystuff.tumblr.com/catagolue-backup (which I actually needed to consult when correcting the switch engine counts -- thanks!). The internal Catagolue backup has the advantage that one can use it to determine when a particular object appeared, and to track how quickly the census is progressing (graphs will soon follow).

Hmmm, looks like this will make my catagolue backup obsolete except as a way to see the names and total ranks of each object in the census!

calcyman wrote:infrequent backup

Unfortunately, at the time I hadn't updated it since July 7. I've updated it a few times since, and it currently contains the September 18 census.