diff --git a/BUGS.md b/BUGS.md
index dd03f68..b21582d 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -39,8 +39,11 @@ When CLOSED, move the entire entry to Resolved — don't duplicate.
 - **Verification**: DS3231 probes at `0x68` (`UU`), its 24C32 EEPROM at `0x57`, `/dev/rtc0`
   registered. Power-cycle test passed — after a full unplug/replug the boot log reads
   `setting system clock to 2026-08-14…` from the RTC (was `2000-01-01` before), and
-  `hwclock -r` matches system time. (Debugging note: the first scans were an empty bus due to
-  a data-line wiring issue, resolved during re-soldering.)
+  `hwclock -r` matches system time; the `SET TIME!` recovery line no longer appears (stable
+  oscillator on CR2032). (Debugging note: the first scans were an empty bus due to a data-line
+  wiring issue, resolved during re-soldering.) SIM868 HAT RTC was also set to the correct time
+  via `AT+CCLK` (was factory-default 2004) — its CR1220 hold will be confirmed on the next
+  power cycle.
 
 ### BUG-17 — Server trip timestamps wrong after an offline period
 - **Status**: `CLOSED` 2026-08-14
diff --git a/PLAN.md b/PLAN.md
index 8f0f9dc..8125797 100644
--- a/PLAN.md
+++ b/PLAN.md
@@ -2276,8 +2276,10 @@ logged as `BUG-XX` entries in [BUGS.md](./BUGS.md) (BUG-16 onward) and fixed + v
   DS3231 install; historical trips 25136/25137 keep their bad data, future trips will be correct.
 - **BUG-18 (no RTC) — ✅ FIXED**: DS3231 on I²C (`0x68`) + CR2032 (charge diode removed), config
   (`dtparam=i2c_arm=on` + `dtoverlay=i2c-rtc,ds3231`), `fake-hwclock` disabled, `i2c-dev`
-  persisted. Power-cycle test passed — boots with correct time from RTC. SIM868 CR1220 also
-  installed (secondary). Optional follow-up: `AT+CCLK` boot-time clock fallback in `app_gps.py`.
+  persisted. Power-cycle test passed — boots with correct time from RTC (stable oscillator, no
+  `SET TIME!`). SIM868 CR1220 installed + its RTC set via `AT+CCLK` (was 2004 default); hold
+  across power-off to confirm on next cycle. Optional follow-up: `AT+CCLK` boot-time clock
+  fallback in `app_gps.py`.
 
 Open items from the drive — fill in as reported:
 - (none clock-related — BUG-17/BUG-18 closed 2026-08-14).