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All CDDIS Users,</div>
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BLUF: </div>
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What: CDDIS Outage</div>
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Date: 22 Sep 2026</div>
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Time: 1330-1530 UTC, 0930-1130 EDT</div>
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Reason: Network upgrades</div>
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Activities affected: All CDDIS file ingest and distribution services will be unavailable. GNSS real-time services are unaffected.</div>
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Questions or concerns please address to: support-cddis@nasa.gov</div>
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We recognize the critical importance of CDDIS to your work and deeply apologize for this outage. As this is a brief maintenance window, it falls below our threshold for failover activation to our disaster recovery site. We expect this work will be completed
well within the posted two-hour window. Please direct any concerns to our ticketing system.</div>
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Thanks</div>
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R</div>
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Pat</div>
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<a href="https://www.nasa.gov/" data-outlook-id="1123cda1-13e5-4c87-a5ee-61d33e728afb" style="color: black;"><img src="cid:image001.png@01DD0550.DEA74690" id="Picture_x0020_1" width="114" height="114" style="width: 1.1979in; height: 1.1979in; max-width: 100%;"></a></div>
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<img src="cid:image002.png@01DD0550.DEA74690" id="Straight_x0020_Connector_x0020_2" width="0" height="144" style="width: 0.0104in; height: 1.5104in; max-width: 100%;"></div>
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<b>Patrick Michael</b></div>
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<span style="line-height: 115%;"><b>Manager, Crustal Dynamics Data Information System (CDDIS)</b></span></div>
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<span style="line-height: 115%;">Geodesy and Geophysics Laboratory</span></div>
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<span style="line-height: 115%;">NASA Goddard Space Flight Center</span></div>
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<span style="line-height: 115%;">Code 61A</span></div>
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<span style="line-height: 115%;">8800 Greenbelt Rd, Greenbelt, MD 20771</span></div>
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<span style="line-height: 115%;">M: 301.606.1416 (p)</span></div>
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<span style="line-height: 115%;">M: 301.256.2640 (w)<br>
O: 301.614.5370</span></div>
<div class="MsoNormal" style="font-family: Helvetica; font-size: 9pt;"><a href="mailto:Patrick.Michael@nasa.gov" data-outlook-id="9882f9e6-81c9-47df-bc43-cf47745565cf">Patrick.Michael@nasa.gov</a></div>
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