NRAO Science Program
NRAO observing proposal submission deadlines for North American facilities are 1 February and 1 August each year. The 1 February deadline applies to requests for observing time from 1 August–31 January; the 1 August deadline applies to requests for time from 1 February–31 July. If a proposal submission deadline date falls on a Saturday or Sunday, then the deadline is moved to the following Monday.
The science programs for each semester are listed in the left column of this page. The GBT and VLBA are only included between 2010A-2016B (see the Green Bank Observatory and Long Baseline Observatory pages for current information about the GBT and VLBA, respectively). The Large Proposal page summarizes the active and past Large proposals, and the Active Triggered Proposal page lists the active triggered proposals, including their expiration date. A Proposal Finder Tool (PFT) that may be used to search cover sheets of proposals previously approved for time on NRAO telescopes.