227 precise glitch dates show no excess of cross-pulsar pairs under local time-shift controls

We test close glitch dates in different pulsars in one Jodrell Bank catalog snapshot. A cut on listed date error of at most one day and positive spin steps leaves 227 events in 87 pulsars. There are 0, 5 and 22 event pairs within 1, 3 and 7 days. Independent circular shifts for each pulsar in fixed 730-day blocks give mean counts of 3.58, 10.71 and 24.98 in 19,999 draws. The joint upper-tail test across the three windows gives p = 0.9151. Three other block choices and a stricter date-error cut also show no excess. This is a conditional catalog test, not proof of physical independence. Unknown observing schedules, selection, date errors and missing events limit the result. We report no new glitch or common trigger. The package contains code, aggregate results, a figure, checks, source hashes and an external-data retrieval script. Raw catalog data and event rows remain outside the package.

pulsar glitches · coincidence search · conditional randomization · null result · catalog selection