KERNEL: when, time, now, after, before, year, day, still, never, last

NEAR PERIPHERY: while, since, again, once, until, always, night, yet, often, week, ever, today, moment, late, already, age, sometimes, morning, soon, hour, month, spring, daily, season, afternoon, Sunday, yesterday, minute, occasion, tomorrow, Monday, till, permanent, nowadays, meantime, instant, sometime, tonight, May, pause, shortly, newly;

FAR PERIPHERY: awhile, once again, nightly, ere, morn, eternity, yesternight, middle of the night, hitherto, twixt eleven and twelve, oft, of late, matin, , instantly, doomsday, afterwards, long, half a year, by and by, hey-day, no sooner, untimely, Saint Valentine's Day, bedtime, how long, interim, whensoever, half an hour, minutes of the night, as, one, then, short, term, twelve, time of night, time of day, hereafter

Far periphery

Near periphery

Kernel

Lexical semantic groups

1) Names of inexact time periods: time, eternity, term, while, pause, age, heyday, instant, moment, interim, minutes of the night, awhile, night, morn, morning, afternoon, matin, time of night, time of day

2) Names of exact time periods: hour, week, day, month, middle of the night, twixt eleven and twelve, minute, twelve, one, doomsday, half a year, year, half an hour, season, spring, Saint Valentine’s Day, bedtime, occasion, May, Sunday, Monday

3) Fixing of an action or phenomena in time: now, tonight, when, ere, till, today, ever, yesternight, before, of late, as, while, yesterday, then, instantly, meantime, sometimes, afterwards, yet, since, last, once, soon, after, tomorrow, already, long, sometime, by and by, no sooner, untimely, nowadays, until, short, newly, late, always, never, whensoever shortly, hereafter

4) Repetition / Duration of an action in time: again, once again, nightly, daily, oft, often, still, hitherto, permanent, how long