window of time

noun 0.641

downtime

noun 0.597

maintenance

noun 0.586

launch window

noun 0.581

window

noun 0.573

off-hour

noun 0.570

operating time

noun 0.556

facility maintenance

noun 0.553

windowing

noun 0.553

storm window

noun 0.550

side window

noun 0.545

opening time

noun 0.544

electric window

noun 0.524

therapeutic window

noun 0.522

sliding window

noun 0.521

time interval

noun 0.514

closed period

noun 0.510

open interval

noun 0.503

interval variable

noun 0.503

mini-break

noun 0.502

sleep mode

noun 0.502