http://irtfweb.ifa.hawaii.edu/observing/callForProposals.php

NASA Infrared Telescope Facility Observing Proposals. The due date for the 2018B semester (August 1, 2018 to January 31, 2019) is Monday, April 2, 2018. See our online submission form. Information on available facility and visitor instruments and performance can be found at:
http://irtfweb.ifa.hawaii.edu/Facility

Observing on-site or remote observing is available with SpeX, MORIS, and iSHELL, and with MIRSI and MOC as shared risk; please see the instrument pages for more information, including the exposure time calculators for SpeX and iSHELL.