The Gemini data center on Cerro Pachon will be powered down for maintenance on Saturday, August 20, as part of the ongoing Gemini South engineering shutdown. Therefore, the Gemini South observing database will be offline from the end of the day on Friday, August 19 until the morning on Monday, August 22. Program sync, file attachment upload, guide star queries, ITC calculations, and image downloads will be affected. Many of these services, but not access to GS programs, will still be available from Gemini North.