# Grainy Day Proposers Day Announcement

Canonical: https://abierto.us/opportunities/darpasn2573

- Solicitation number: DARPA-SN-25-73
- Notice type: Special notice
- Status: Closed. Deadline was June 25, 2025
- Department: Department of Defense
- Agency: Defense Advanced Research Projects Agency
- Contracting office: Def Advanced Research Projects Agcy (HR0011)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AC13 National Defense R&D Services; Department Of Defense - Military; Experimental Development
- First posted: June 4, 2025
- Last posted: June 4, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/fb0492be245e42a6863e3f1e6a220c17/view

## Description

The Defense Advanced Research Projects Agency (DARPA) is soliciting innovative proposals to the Grainy Day program. Grainy Day seeks innovative approaches and new methods to address challenges in passive accurate placement of unattended sensors from Unmanned Aerial Systems (UAS) and military aircraft. This Program Solicitation (PS) calls specifically for Abstracts to be submitted by July 31, 2025, by 5:00 PM ET.

The government will review Abstracts; if selected, the proposer will be asked to give an oral presentation to the government. Oral presentations will be evaluated by the government and, if selected, may result in a Phase 1 (Base) and Phase 2 (Option) award of an Other Transaction and eligibility to participate in future Phases of the program.

This PS encourages solutions from all responsible sources capable of satisfying the government’s needs, including large and small businesses, nontraditional defense contractors as defined in 10 U.S.C. § 3014, and research institutions as defined in 15 U.S.C. § 638.

## Publications

- June 4, 2025: Special notice, due June 25, 2025 at 5:00 PM EDT. Notice c9da8ac0fcd84ebea1798387a9f5e1ef. https://sam.gov/workspace/contract/opp/c9da8ac0fcd84ebea1798387a9f5e1ef/view
- June 4, 2025: Special notice, due June 25, 2025. Notice fb0492be245e42a6863e3f1e6a220c17. https://sam.gov/workspace/contract/opp/fb0492be245e42a6863e3f1e6a220c17/view

## Points of contact

- BAA Coordinator, GrainyDay@darpa.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/darpasn2573.