diff --git a/manifest b/manifest
index 27ea0b142c..1c38152cce 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Merge\swasi-patches\sbranch\sinto\strunk.
-D 2023-02-08T08:49:52.993
+C Add\sthe\s'txn'\sdate/time\sformat.\s\sChange\sCURRENT_TIMESTAMP\sand\ssimilar\sto\suse\n'tnx'-style\ssemantics\sinstead\sof\s'now'-style.
+D 2023-02-08T12:47:37.844
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -567,7 +567,7 @@ F src/build.c c55ab6d1b089ceef57160e840f05f692955ac90944c3d04fcf01d97fd7bfd08d
 F src/callback.c 4cd7225b26a97f7de5fee5ae10464bed5a78f2adefe19534cc2095b3a8ca484a
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 20507cc0b0a6c19cd882fcd0eaeda32ae6a4229fb4b024cfdf3183043d9b703d
-F src/date.c 94ce83b4cd848a387680a5f920c9018c16655db778c4d36525af0a0f34679ac5
+F src/date.c 37ca5e3cb34d666fae892156c9317d8bf756ae8a281504040dd3a02813ce5e9e
 F src/dbpage.c d47549716549311f79dc39fe5c8fb19390a6eb2c960f8e37c89a9c4de0c1052e
 F src/dbstat.c ec92074baa61d883de58c945162d9e666c13cd7cf3a23bc38b4d1c4d0b2c2bef
 F src/delete.c 86573edae75e3d3e9a8b590d87db8e47222103029df4f3e11fa56044459b514e
@@ -626,7 +626,7 @@ F src/shell.c.in 623d793be69c1d9592447fa6e1dbabfce46758821f2b63d6cde2c8cd1d47264
 F src/sqlite.h.in c060f9e6f646fd817abf273c068666e079fc6e8467ea1d3e8b20f355f82722e9
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h da473ce2b3d0ae407a6300c4a164589b9a6bfdbec9462688a8593ff16f3bb6e4
-F src/sqliteInt.h 43eeee1ea80543a0e40444bf53643ca259a2b1158ccfe859a6a6435b7358ecdd
+F src/sqliteInt.h 859e193140c393a9a50dd81345b95130b208a312dd064867065c5e637232ed58
 F src/sqliteLimit.h d7323ffea5208c6af2734574bae933ca8ed2ab728083caa117c9738581a31657
 F src/status.c 160c445d7d28c984a0eae38c144f6419311ed3eace59b44ac6dafc20db4af749
 F src/table.c 0f141b58a16de7e2fbe81c308379e7279f4c6b50eb08efeec5892794a0ba30d1
@@ -694,8 +694,8 @@ F src/vacuum.c 84ce7f01f8a7a08748e107a441db83bcec13970190ddcb0c9ff522adbc1c23fd
 F src/vdbe.c 47d3b78e75e239e1909933f0d77612b4111ebe760f01fdd0085e4e30b59b4cc6
 F src/vdbe.h 73b904a6b3bb27f308c6cc287a5751ebc7f1f89456be0ed068a12b92844c6e8c
 F src/vdbeInt.h a4147a4ddf613cb1bcb555ace9e9e74a9c099d65facd88155f191b1fb4d74cfb
-F src/vdbeapi.c 40c47b1528d308a322203de21d2e0d711753257ed9771771b6129214b1d65932
-F src/vdbeaux.c 3f9e3b6585e7434aa11300169dd66ddf0fc963a0c6f7940bdc058335dadeb353
+F src/vdbeapi.c be64df0e21a43056b62f46777749347b7d51f6e5e6c419c4bf42ce9bf98d6064
+F src/vdbeaux.c 9f2a2ec80ff90266ab603065c32dd3c8b0a53023ab7210a03fccf324ad6ddbce
 F src/vdbeblob.c 5e61ce31aca17db8fb60395407457a8c1c7fb471dde405e0cd675974611dcfcd
 F src/vdbemem.c 87d3811aabb68eb9210c14c9a8b5e8ec3acb7ba787beb80a4323af54fb6013f7
 F src/vdbesort.c 43756031ca7430f7aec3ef904824a7883c4ede783e51f280d99b9b65c0796e35
@@ -910,7 +910,7 @@ F test/ctime.test 340f362f41f92972bbd71f44e10569a5cc694062b692231bd08aa6fe6c1c47
 F test/cursorhint.test 0175e4404181ace3ceca8b114eb0a98eae600d565aa4e2705abbe6614c7fe201
 F test/cursorhint2.test 6f3aa9cb19e7418967a10ec6905209bcbb5968054da855fc36c8beee9ae9c42f
 F test/dataversion1.test 6e5e86ac681f0782e766ebcb56c019ae001522d114e0e111e5ebf68ccf2a7bb8
-F test/date.test 118e04db8c8b4efeb885542b4918c7b869a34c460a6bebbfe927dfd75706b80d
+F test/date.test 8e9ae588d832c54fa2512b0f9789bea48442ada0736dabee54b377dc1b8d4a87
 F test/date2.test 7e12ec14aaf4d5e6294b4ba140445b0eca06ea50062a9c3a69c4ee13d0b6f8b1
 F test/date3.test a1b77abf05c6772fe5ca2337cac1398892f2a41e62bce7e6be0f4a08a0e64ae5
 F test/dbdata.test 042f49acff3438f940eeba5868d3af080ae64ddf26ae78f80c92bec3ca7d8603
@@ -2045,9 +2045,9 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 2abc3f9de0d2b66342598ab9015e62568ed20c7da4744a0f0a76b1db72c7e941 656d36f50f630da68262469087bad1ac71b10325e233a7963103c8cbc232f61a
-R 7644b35acb2adcbe9465af90730ac93f
-T +closed 656d36f50f630da68262469087bad1ac71b10325e233a7963103c8cbc232f61a Closed\sby\sintegrate-merge.
-U stephan
-Z faa4f9c7961b812c919d8c373bc1fa2c
+P 9902e66a37d59c1909593bbc296091df3fa3bfa12ec7062bd84e458030f77c8d 7b2fa20e31b8a0314b9ccb97bb556898d552505dbc5943f248df3f86c0f4e008
+R 645bf11b6f82132024c9558d18e0aef7
+T +closed 7b2fa20e31b8a0314b9ccb97bb556898d552505dbc5943f248df3f86c0f4e008
+U drh
+Z 2be6e595f8a3c82105db9bee2081e8f8
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 88dc084a67..12478fb900 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-9902e66a37d59c1909593bbc296091df3fa3bfa12ec7062bd84e458030f77c8d
\ No newline at end of file
+61cc8ed8d3541eddf23a9d542179c3f0223c5b8519b54d3be79988a376e25a89
\ No newline at end of file
diff --git a/src/date.c b/src/date.c
index a3e58bc4e3..8546b5dc89 100644
--- a/src/date.c
+++ b/src/date.c
@@ -331,12 +331,16 @@ static int parseYyyyMmDd(const char *zDate, DateTime *p){
 }
 
 /*
-** Set the time to the current time reported by the VFS.
+** Set the time to the current time reported for the prepared statement
+** that is currently executing.  The same time is reported for all
+** invocations of this routine from within the same call to sqlite3_step().
+**
+** Or if bTxn is true, use the transaction time.
 **
 ** Return the number of errors.
 */
-static int setDateTimeToCurrent(sqlite3_context *context, DateTime *p){
-  p->iJD = sqlite3StmtCurrentTime(context);
+static int setCurrentStmtTime(sqlite3_context *context, DateTime *p, int bTxn){
+  p->iJD = sqlite3StmtCurrentTime(context, bTxn);
   if( p->iJD>0 ){
     p->validJD = 1;
     return 0;
@@ -387,7 +391,9 @@ static int parseDateOrTime(
   }else if( parseHhMmSs(zDate, p)==0 ){
     return 0;
   }else if( sqlite3StrICmp(zDate,"now")==0 && sqlite3NotPureFunc(context) ){
-    return setDateTimeToCurrent(context, p);
+    return setCurrentStmtTime(context, p, 0);
+  }else if( sqlite3StrICmp(zDate,"txn")==0 && sqlite3NotPureFunc(context) ){
+    return setCurrentStmtTime(context, p, 1);
   }else if( sqlite3AtoF(zDate, &r, sqlite3Strlen30(zDate), SQLITE_UTF8)>0 ){
     setRawDateNumber(p, r);
     return 0;
@@ -931,8 +937,11 @@ static int parseModifier(
 ** the resulting time into the DateTime structure p.  Return 0
 ** on success and 1 if there are any errors.
 **
-** If there are zero parameters (if even argv[0] is undefined)
-** then assume a default value of "now" for argv[0].
+** If there are zero parameters (if argc<=0) then assume a default
+** value of "now" for argv[0] if argc==0 and "txn" if argc<0.  SQL
+** functions will always have argc>=0, but the special implementations
+** of CURRENT_TIME, CURRENT_DATE, and CURRENT_TIMESTAMP set argc to -1
+** in order to force the use of 'txn' semantics.
 */
 static int isDate(
   sqlite3_context *context, 
@@ -944,9 +953,9 @@ static int isDate(
   const unsigned char *z;
   int eType;
   memset(p, 0, sizeof(*p));
-  if( argc==0 ){
+  if( argc<=0 ){
     if( !sqlite3NotPureFunc(context) ) return 1;
-    return setDateTimeToCurrent(context, p);
+    return setCurrentStmtTime(context, p, argc<0);
   }
   if( (eType = sqlite3_value_type(argv[0]))==SQLITE_FLOAT
                    || eType==SQLITE_INTEGER ){
@@ -1253,7 +1262,7 @@ static void ctimeFunc(
   sqlite3_value **NotUsed2
 ){
   UNUSED_PARAMETER2(NotUsed, NotUsed2);
-  timeFunc(context, 0, 0);
+  timeFunc(context, -1, 0);
 }
 
 /*
@@ -1267,7 +1276,7 @@ static void cdateFunc(
   sqlite3_value **NotUsed2
 ){
   UNUSED_PARAMETER2(NotUsed, NotUsed2);
-  dateFunc(context, 0, 0);
+  dateFunc(context, -1, 0);
 }
 
 /*
@@ -1281,7 +1290,7 @@ static void ctimestampFunc(
   sqlite3_value **NotUsed2
 ){
   UNUSED_PARAMETER2(NotUsed, NotUsed2);
-  datetimeFunc(context, 0, 0);
+  datetimeFunc(context, -1, 0);
 }
 #endif /* !defined(SQLITE_OMIT_DATETIME_FUNCS) */
 
@@ -1312,7 +1321,7 @@ static void currentTimeFunc(
   UNUSED_PARAMETER(argc);
   UNUSED_PARAMETER(argv);
 
-  iT = sqlite3StmtCurrentTime(context);
+  iT = sqlite3StmtCurrentTime(context, 1);
   if( iT<=0 ) return;
   t = iT/1000 - 10000*(sqlite3_int64)21086676;
 #if HAVE_GMTIME_R
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 3da5f13d5b..73378dbf61 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -1621,6 +1621,7 @@ struct sqlite3 {
   u8 nSqlExec;                  /* Number of pending OP_SqlExec opcodes */
   u8 eOpenState;                /* Current condition of the connection */
   int nextPagesize;             /* Pagesize after VACUUM if >0 */
+  i64 txnTime;                  /* Timestamp for current transaction */
   i64 nChange;                  /* Value returned by sqlite3_changes() */
   i64 nTotalChange;             /* Value returned by sqlite3_total_changes() */
   int aLimit[SQLITE_N_LIMIT];   /* Limits */
@@ -5340,7 +5341,7 @@ FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
     && !defined(SQLITE_OMIT_VIRTUALTABLE)
   void sqlite3VtabUsesAllSchemas(sqlite3_index_info*);
 #endif
-sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*);
+sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context*, int);
 int sqlite3VdbeParameterIndex(Vdbe*, const char*, int);
 int sqlite3TransferBindings(sqlite3_stmt *, sqlite3_stmt *);
 void sqlite3ParseObjectInit(Parse*,sqlite3*);
diff --git a/src/vdbeapi.c b/src/vdbeapi.c
index 476b6a2adf..722d1215f1 100644
--- a/src/vdbeapi.c
+++ b/src/vdbeapi.c
@@ -970,18 +970,27 @@ int sqlite3_vtab_in_next(sqlite3_value *pVal, sqlite3_value **ppOut){
 ** statement, the exact same time is returned for each invocation regardless
 ** of the amount of time that elapses between invocations.  In other words,
 ** the time returned is always the time of the first call.
+**
+** Or, if bTxn, return the transaction time.  The transaction time is the
+** same for all calls within the same transaction.
+**
+** bTxn is 0 for SQL like datetime('now') and is 1 for datetime('txn').
 */
-sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
+sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p, int bTxn){
   int rc;
 #ifndef SQLITE_ENABLE_STAT4
-  sqlite3_int64 *piTime = &p->pVdbe->iCurrentTime;
+  sqlite3_int64 *piTime;
+  sqlite3 *db = p->pOut->db;
   assert( p->pVdbe!=0 );
+  piTime = bTxn ? &db->txnTime : &p->pVdbe->iCurrentTime;
 #else
   sqlite3_int64 iTime = 0;
-  sqlite3_int64 *piTime = p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime;
+  sqlite3_int64 *piTime;
+  sqlite3 *db = p->pOut->db;
+  piTime = bTxn ? &db->txnTime : p->pVdbe!=0 ? &p->pVdbe->iCurrentTime : &iTime;
 #endif
   if( *piTime==0 ){
-    rc = sqlite3OsCurrentTimeInt64(p->pOut->db->pVfs, piTime);
+    rc = sqlite3OsCurrentTimeInt64(db->pVfs, piTime);
     if( rc ) *piTime = 0;
   }
   return *piTime;
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index d04d8f1e17..82dc607154 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -3394,6 +3394,7 @@ int sqlite3VdbeHalt(Vdbe *p){
   */
   if( db->autoCommit ){
     sqlite3ConnectionUnlocked(db);
+    db->txnTime = 0;
   }
 
   assert( db->nVdbeActive>0 || db->autoCommit==0 || db->nStatement==0 );
diff --git a/test/date.test b/test/date.test
index 62233ad8f6..479635753a 100644
--- a/test/date.test
+++ b/test/date.test
@@ -309,9 +309,9 @@ sqlite3_test_control SQLITE_TESTCTRL_LOCALTIME_FAULT 0
 #
 datetest 7.1 {datetime(null)} NULL
 datetest 7.2 {datetime('now',null)} NULL
-datetest 7.3 {datetime('now','localtime',null)} NULL
+datetest 7.3 {datetime('txn','localtime',null)} NULL
 datetest 7.4 {time(null)} NULL
-datetest 7.5 {time('now',null)} NULL
+datetest 7.5 {time('txn',null)} NULL
 datetest 7.6 {time('now','localtime',null)} NULL
 datetest 7.7 {date(null)} NULL
 datetest 7.8 {date('now',null)} NULL
@@ -322,28 +322,28 @@ datetest 7.12 {julianday('now','localtime',null)} NULL
 datetest 7.13 {strftime(null,'now')} NULL
 datetest 7.14 {strftime('%s',null)} NULL
 datetest 7.15 {strftime('%s','now',null)} NULL
-datetest 7.16 {strftime('%s','now','localtime',null)} NULL
+datetest 7.16 {strftime('%s','txn','localtime',null)} NULL
 
 # Test modifiers when the date begins as a julian day number - to
 # make sure the HH:MM:SS is preserved.  Ticket #551.
 #
 set sqlite_current_time [db eval {SELECT strftime('%s','2003-10-22 12:34:00')}]
 datetest 8.1 {datetime('now','weekday 0')} {2003-10-26 12:34:00}
-datetest 8.2 {datetime('now','weekday 1')} {2003-10-27 12:34:00}
+datetest 8.2 {datetime('txn','weekday 1')} {2003-10-27 12:34:00}
 datetest 8.3 {datetime('now','weekday 2')} {2003-10-28 12:34:00}
-datetest 8.4 {datetime('now','weekday 3')} {2003-10-22 12:34:00}
+datetest 8.4 {datetime('txn','weekday 3')} {2003-10-22 12:34:00}
 datetest 8.5 {datetime('now','start of month')} {2003-10-01 00:00:00}
-datetest 8.6 {datetime('now','start of year')} {2003-01-01 00:00:00}
+datetest 8.6 {datetime('txn','start of year')} {2003-01-01 00:00:00}
 datetest 8.7 {datetime('now','start of day')} {2003-10-22 00:00:00}
-datetest 8.8 {datetime('now','1 day')} {2003-10-23 12:34:00}
+datetest 8.8 {datetime('txn','1 day')} {2003-10-23 12:34:00}
 datetest 8.9 {datetime('now','+1 day')} {2003-10-23 12:34:00}
-datetest 8.10 {datetime('now','+1.25 day')} {2003-10-23 18:34:00}
+datetest 8.10 {datetime('txn','+1.25 day')} {2003-10-23 18:34:00}
 datetest 8.11 {datetime('now','-1.0 day')} {2003-10-21 12:34:00}
-datetest 8.12 {datetime('now','1 month')} {2003-11-22 12:34:00}
+datetest 8.12 {datetime('txn','1 month')} {2003-11-22 12:34:00}
 datetest 8.13 {datetime('now','11 month')} {2004-09-22 12:34:00}
-datetest 8.14 {datetime('now','-13 month')} {2002-09-22 12:34:00}
+datetest 8.14 {datetime('txn','-13 month')} {2002-09-22 12:34:00}
 datetest 8.15 {datetime('now','1.5 months')} {2003-12-07 12:34:00}
-datetest 8.16 {datetime('now','-5 years')} {1998-10-22 12:34:00}
+datetest 8.16 {datetime('txn','-5 years')} {1998-10-22 12:34:00}
 datetest 8.17 {datetime('now','+10.5 minutes')} {2003-10-22 12:44:30}
 datetest 8.18 {datetime('now','-1.25 hours')} {2003-10-22 11:19:00}
 datetest 8.19 {datetime('now','11.25 seconds')} {2003-10-22 12:34:11}
@@ -486,11 +486,76 @@ do_test date-15.1 {
   }
 } {0.0}
 do_test date-15.2 {
+  db func sleeper sleeper
+  db eval {
+     SELECT c - a FROM (SELECT julianday('txn') AS a,
+                               sleeper(), julianday('txn') AS c);
+  }
+} {0.0}
+do_test date-15.3 {
   db eval {
      SELECT a==b FROM (SELECT current_timestamp AS a,
                                sleeper(), current_timestamp AS b);
   }
 } {1}
+do_test date-15.4 {
+  db eval {
+     SELECT a==b FROM (SELECT julianday('txn') AS a,
+                               sleeper(), julianday('now') AS b);
+  }
+} {0}
+
+do_execsql_test date-15.5 {
+  CREATE TEMP TABLE t15(a,b);
+  BEGIN;
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  COMMIT;
+  SELECT count(a), count(DISTINCT a) FROM t15;
+} {3 1}
+do_execsql_test date-15.6 {
+  DELETE FROM t15;
+  BEGIN;
+  INSERT INTO t15(a,b) VALUES(julianday('now'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('now'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('now'),sleeper());
+  COMMIT;
+  SELECT count(a), count(DISTINCT a) FROM t15;
+} {3 3}
+do_execsql_test date-15.7 {
+  DELETE FROM t15;
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  BEGIN;
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  INSERT INTO t15(a,b) VALUES(julianday('txn'),sleeper());
+  COMMIT;
+  SELECT count(a), count(DISTINCT a) FROM t15;
+} {4 3}
+
+do_test date-15.10 {
+  unset -nocomplain x
+  db eval {BEGIN;}
+  db eval {
+    SELECT
+       current_time AS ct1,
+       current_date AS cd1,
+       current_timestamp AS cs1,
+       time() AS ct2,
+       datetime() AS cs2;
+    } x {continue}
+  after 1000
+  db eval {
+    SELECT
+      current_time=$x(ct1),
+      current_date=$x(cd1),
+      current_timestamp=$x(cs1),
+      time()=$x(ct2),
+      datetime()=$x(cs2);
+  }
+} {1 1 1 0 0}
+db eval {COMMIT}
 
 # Tests of extreme values in date/time functions.  Run with UBSan or the
 # equivalent to verify no signed interger overflow warnings.