Lockstep question

If you remind us what it was? I read this about 2 months ago :)

Nornal lockstep is on a cycle of thirty years asleep, one month awake. A weekly is a lockstep which goes on a seven-year cycle of sleep, one week awake. Only some people are woken up. The purpose is to trade with locksteps that run on different lockstep 'frequencies', or times of lockstep sleep.