diff --git a/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtime.md b/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtime.md
index 0d4997f35154..664e0782310c 100644
--- a/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtime.md
+++ b/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtime.md
@@ -88,6 +88,13 @@ If the function fails, the return value is zero. To get extended error informati
 
 <b>TzSpecificLocalTimeToSystemTime</b> takes into account whether daylight saving time (DST) is in effect for the local time to be converted.
 
+> [!IMPORTANT]
+> Certain local times near DST transitions may be <b>ambiguous</b> or <b>invalid</b>. Specifying such a time can result in unexpected behavior as there is no guaranteed "correct" result. 
+> - During the transition from daylight time to standard time, the local clock repeats. A local time within the repeated window is ambiguous because it occurs twice, once in daylight time and once in standard time.
+> - During the transition from standard time to daylight time, the local clock jumps forward. A local time within the skipped window does not have a valid UTC conversion. 
+>
+> Applications requiring continuity or precision should avoid relying on this function and look to use UTC time directly instead. 
+
 ## -see-also
 
 <a href="/windows/desktop/api/sysinfoapi/nf-sysinfoapi-getsystemtime">GetSystemTime</a>
@@ -114,4 +121,4 @@ If the function fails, the return value is zero. To get extended error informati
 
 
 
-<a href="/windows/desktop/SysInfo/time-functions">Time Functions</a>
\ No newline at end of file
+<a href="/windows/desktop/SysInfo/time-functions">Time Functions</a>
diff --git a/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtimeex.md b/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtimeex.md
index 7f4a7120b2ad..3c6750ee9a03 100644
--- a/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtimeex.md
+++ b/sdk-api-src/content/timezoneapi/nf-timezoneapi-tzspecificlocaltimetosystemtimeex.md
@@ -74,4 +74,15 @@ A pointer to a
 ## -returns
 
 If the function fails, the return value is zero. To get extended error information, call 
-<a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a>.
\ No newline at end of file
+<a href="/windows/desktop/api/errhandlingapi/nf-errhandlingapi-getlasterror">GetLastError</a>.
+
+## -remarks
+
+<b>TzSpecificLocalTimeToSystemTimeEx</b> takes into account whether daylight saving time (DST) is in effect for the local time to be converted.
+
+> [!IMPORTANT]
+> Certain local times near DST transitions may be <b>ambiguous</b> or <b>invalid</b>. Specifying such a time can result in unexpected behavior as there is no guaranteed "correct" result. 
+> - During the transition from daylight time to standard time, the local clock repeats. A local time within the repeated window is ambiguous because it occurs twice, once in daylight time and once in standard time.
+> - During the transition from standard time to daylight time, the local clock jumps forward. A local time within the skipped window does not have a valid UTC conversion. 
+>
+> Applications requiring continuity or precision should avoid relying on this function and look to use UTC time directly instead.