diff --git a/core/libs/prx/libSceRtc/Export.cpp b/core/libs/prx/libSceRtc/Export.cpp
index 43d049c976..7364077dff 100644
--- a/core/libs/prx/libSceRtc/Export.cpp
+++ b/core/libs/prx/libSceRtc/Export.cpp
@@ -270,14 +270,20 @@ bool parseZoneName(const char* cursor, std::int64_t& offsetMinutes) {
         const char* name;
         std::int64_t minutes;
     } zones[] = {
-        {"WETDST", 60}, {"METDST", 120}, {"EETDST", 180}, {"SWT", 60}, {"MEZ", 60}, {"AESST", 660}, {"ACSST", 630},
-        {"CAST", 570}, {"CADT", 630}, {"SAST", 570}, {"SADT", 630}, {"WST", 480}, {"WDT", 540},
-        {"GMT", 0}, {"WET", 0}, {"BST", 60}, {"WAT", -60}, {"AST", -240}, {"ADT", -180}, {"EST", -300}, {"EDT", -240},
-        {"CST", -360}, {"CDT", -300}, {"MST", -420}, {"MDT", -360}, {"PST", -480}, {"PDT", -420}, {"YST", -540}, {"YDT", -480},
-        {"HDT", -540}, {"CAT", -600}, {"AHST", -600}, {"NST", -150}, {"NFT", -150}, {"NDT", -90}, {"IDLW", -720}, {"CET", 60}, {"MET", 60},
-        {"DNT", 60}, {"NOR", 60}, {"SET", 60}, {"MEWT", 60}, {"MEST", 120}, {"CEST", 120}, {"SST", 120}, {"FWT", 120}, {"FST", 60}, {"EET", 120}, {"IST", 120},
-        {"WAST", 420}, {"WADT", 480}, {"CCT", 480}, {"AWST", 480}, {"JST", 540}, {"KST", 540}, {"ACST", 570}, {"EAST", 600},
-        {"GST", 600}, {"AEST", 600}, {"NZT", 720}, {"NZST", 720}, {"NZDT", 780}, {"IDLE", 720}, {"JT", 450},
+        {"GMT", 0}, {"EST", -300}, {"EDT", -240}, {"CST", -360}, {"CDT", -300},
+        {"MST", -420}, {"MDT", -360}, {"PST", -480}, {"PDT", -420}, {"NZDT", 780},
+        {"NZST", 720}, {"IDLE", 720}, {"NZT", 720}, {"AESST", 660}, {"ACSST", 630},
+        {"CADT", 630}, {"SADT", 630}, {"AEST", 600}, {"EAST", 600}, {"GST", 600},
+        {"LIGT", 600}, {"ACST", 570}, {"SAST", 570}, {"CAST", 570}, {"AWSST", 540},
+        {"JST", 540}, {"KST", 540}, {"WDT", 540}, {"MT", 510}, {"AWST", 480},
+        {"CCT", 480}, {"WADT", 480}, {"WST", 480}, {"JT", 450}, {"WAST", 420},
+        {"IT", 210}, {"BT", 180}, {"EETDST", 180}, {"EET", 120}, {"CETDST", 120}, {"CEST", 120},
+        {"FWT", 120}, {"IST", 120}, {"MEST", 120}, {"METDST", 120}, {"SST", 120},
+        {"BST", 60}, {"CET", 60}, {"DNT", 60}, {"FST", 60}, {"MET", 60},
+        {"MEWT", 60}, {"MEZ", 60}, {"NOR", 60}, {"SET", 60}, {"SWT", 60},
+        {"WETDST", 60}, {"WET", 0}, {"WAT", -60}, {"NDT", -90}, {"ADT", -180},
+        {"NFT", -150}, {"NST", -150}, {"AST", -240}, {"YDT", -480}, {"HDT", -540},
+        {"YST", -540}, {"AHST", -600}, {"CAT", -600}, {"NT", -660}, {"IDLW", -720},
     };
     for (const auto& zone : zones) {
         const char* name = cursor;
diff --git a/core/libs/tests/GuestRtc.cpp b/core/libs/tests/GuestRtc.cpp
index a5585f843d..53e55fd327 100644
--- a/core/libs/tests/GuestRtc.cpp
+++ b/core/libs/tests/GuestRtc.cpp
@@ -438,6 +438,8 @@ int main() {
         const char* name;
         std::int64_t minutes;
     } additionalZones[] = {
+        {"LIGT", 600}, {"AWSST", 540}, {"CETDST", 120},
+        {"DNT", 60}, {"NOR", 60}, {"SET", 60}, {"NFT", -150},
         {"SWT", 60}, {"MEZ", 60}, {"WETDST", 60}, {"METDST", 120}, {"EETDST", 180},
         {"AESST", 660}, {"ACSST", 630}, {"CAST", 570}, {"CADT", 630}, {"SAST", 570}, {"SADT", 630}, {"WST", 480}, {"WDT", 540},
     };
@@ -463,6 +465,20 @@ int main() {
         Require(tick.tick == at(2000, 3, 1, 8, 9, 10) - static_cast<std::uint64_t>(zone.minutes * 60000000));
     }
 
+    const struct {
+        const char* name;
+        std::int64_t minutes;
+    } secondLetterZones[] = {
+        {"MT", 0}, {"mt", 510}, {"IT", 0}, {"it", 210},
+        {"BT", 0}, {"bt", 180}, {"NT", 0}, {"nt", -660},
+    };
+    for (const auto& zone : secondLetterZones) {
+        char text[80];
+        std::snprintf(text, sizeof(text), "Thu, 29 Feb 2024 12:34:56 %s", zone.name);
+        Require(sceRtcParseDateTime(&tick, text) == 0);
+        Require(tick.tick == leapDayTick - 789000ull - static_cast<std::uint64_t>(zone.minutes * 60000000));
+    }
+
     RtcTick source{leapDayTick};
     RtcTick result{};
     Require(sceRtcTickAddSeconds(&result, &source, 3600) == 0 && result.tick == leapDayTick + 3600000000ull);
diff --git a/docs/dev/debt/libSceRtc.md b/docs/dev/debt/libSceRtc.md
index cf5399b601..8b683a05c6 100644
--- a/docs/dev/debt/libSceRtc.md
+++ b/docs/dev/debt/libSceRtc.md
@@ -6,7 +6,6 @@
 
 ### Unknown function info
 
-- [sceRtcParseDateTime](../../../core/libs/prx/libSceRtc/Export.cpp) (libSceRtc) - the zone name table matches every name of 1 to 3 uppercase letters as a payload process on PS5 firmware 13.60 parsed them in the RFC 2822 form; of the longer names only real ones were tried (ACDT, AEST, CEST, NZDT, MESZ and others). Any other name of 4 or more letters is assumed to take the military letter offset of its first character, so a longer name the console's table holds but nobody measured gets the wrong offset
 - [sceRtcParseDateTime](../../../core/libs/prx/libSceRtc/Export.cpp) (libSceRtc) - a blank zone after seconds is accepted. With fully allocated input storage on PS5 firmware 13.42 and again on 13.60, the same NUL-terminated text returned `BAD_PARSE` when the byte after its terminator was zero and succeeded when that byte was uppercase `T`. This dependence on storage after the terminator is not modeled; controlled backing-byte measurements in a title process are unavailable.
 - [sceRtcFormatRFC2822, sceRtcFormatRFC2822LocalTime, sceRtcFormatRFC3339LocalTime](../../../core/libs/prx/libSceRtc/Export.cpp) (libSceRtc) - only shadPS4 (PS4) has bodies. A null tick formats the current time, as shadPS4 does and as these three and `sceRtcFormatRFC3339` did in a payload process on a PS5 (firmware 13.60); offsets outside ±1439 minutes return `INVALID_VALUE` like `sceRtcFormatRFC3339`, also with a null tick there; the local-time variants use the host's offset at the given instant (shadPS4 uses `sceKernelGettimezone`, the current offset)
 - [sceRtcGetDosTime, sceRtcSetDosTime](../../../core/libs/prx/libSceRtc/Export.cpp) (libSceRtc) - bit layout from shadPS4 (PS4, the standard FAT date/time). A year outside 1980-2107 makes `GetDosTime` return `INVALID_YEAR` after writing 0 for an earlier one and `0xff9fbf7d` (2107-12-31 23:59:58, the largest encodable time) for a later one, and `SetDosTime` decodes the year as the unsigned 7-bit FAT field (1980-2107) without validating the fields, as the disassembly-derived [fpPS4](https://github.com/red-prig/fpPS4) reimplementation of the PS4 library does; not confirmed on a PS5 title, and shadPS4 instead masks out-of-range years into the packed value and sign-extends the 16-bit date