Merge pull request #5 from rnabioco/motd-maint-from-reservation

Author: jayhesselberth

docs/admin.md

@@ -21,6 +21,7 @@ scontrol create reservation \
 - **`Flags=MAINT`** tells the backfill scheduler not to schedule jobs that would overlap with the reservation. Jobs already running that finish before the start time are unaffected.
 - Users can see the upcoming reservation with `scontrol show reservation`.
 - Jobs whose wall time would bleed into the reservation window won't start until after it ends.
+- The reservation also drives the [login-splash maintenance banner](login-splash.md#maintenance-banner): once it's created, the countdown shown to users tracks the reservation's `StartTime`. With no `MAINT` reservation, the banner falls back to the last Thursday of the month, so the two stay in sync automatically.
 
 ### Useful reservation flags
 

docs/login-splash.md

@@ -35,7 +35,11 @@ Cluster maintenance is scheduled for the **last Thursday of every month**. The b
 | Day of maintenance | **Red** background | "MAINTENANCE TODAY: Thursday, March 26, 2026" |
 | More than 5 days out | No banner | — |
 
-No configuration is needed — the script calculates the next last-Thursday automatically.
+The banner date comes from the soonest upcoming SLURM `MAINT` reservation when
+one is scheduled (see [admin guide](admin.md#scheduling-maintenance)), so it
+always reflects the real maintenance window. If no reservation is queryable, the
+script falls back to calculating the next last-Thursday automatically. Either
+way, no per-login configuration is needed.
 
 ## Admin messages