11 files changed, 22 insertions, 1 deletions
diff --git a/backends/platform/android/android.cpp b/backends/platform/android/android.cpp
index 902599d50f..0b31ee717c 100644
--- a/backends/platform/android/android.cpp
+++ b/backends/platform/android/android.cpp
@@ -554,6 +554,7 @@ void OSystem_Android::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = tm.tm_mday;
 	td.tm_mon = tm.tm_mon;
 	td.tm_year = tm.tm_year;
+	td.tm_wday = tm.tm_wday;
 }
 
 void OSystem_Android::addSysArchivesToSearchSet(Common::SearchSet &s,
diff --git a/backends/platform/bada/system.cpp b/backends/platform/bada/system.cpp
index d284688068..816a6755fc 100644
--- a/backends/platform/bada/system.cpp
+++ b/backends/platform/bada/system.cpp
@@ -399,6 +399,11 @@ void BadaSystem::getTimeAndDate(TimeDate &td) const {
 		td.tm_mday = currentTime.GetDay();
 		td.tm_mon = currentTime.GetMonth();
 		td.tm_year = currentTime.GetYear();
+#ifdef RELEASE_BUILD
+		#error getTimeAndDate() is not setting the day of the week
+#else
+		td.tm_wday = 0; // FIXME
+#endif
 	}
 }
 
diff --git a/backends/platform/dc/dcmain.cpp b/backends/platform/dc/dcmain.cpp
index 3e3279f9c3..bec1fdae3a 100644
--- a/backends/platform/dc/dcmain.cpp
+++ b/backends/platform/dc/dcmain.cpp
@@ -213,6 +213,7 @@ void OSystem_Dreamcast::getTimeAndDate(TimeDate &td) const {
   td.tm_mday = t.tm_mday;
   td.tm_mon = t.tm_mon;
   td.tm_year = t.tm_year;
+  td.tm_wday = t.tm_wday;
 }
 
 Common::SeekableReadStream *OSystem_Dreamcast::createConfigReadStream() {
diff --git a/backends/platform/ds/arm9/source/osystem_ds.cpp b/backends/platform/ds/arm9/source/osystem_ds.cpp
index 5c20deb359..a4b9c842fc 100644
--- a/backends/platform/ds/arm9/source/osystem_ds.cpp
+++ b/backends/platform/ds/arm9/source/osystem_ds.cpp
@@ -690,6 +690,7 @@ void OSystem_DS::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = t.tm_mday;
 	td.tm_mon = t.tm_mon;
 	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
 }
 
 FilesystemFactory *OSystem_DS::getFilesystemFactory() {
diff --git a/backends/platform/iphone/osys_main.cpp b/backends/platform/iphone/osys_main.cpp
index 6935399c95..f9b2a81ce6 100644
--- a/backends/platform/iphone/osys_main.cpp
+++ b/backends/platform/iphone/osys_main.cpp
@@ -235,6 +235,7 @@ void OSystem_IPHONE::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = t.tm_mday;
 	td.tm_mon = t.tm_mon;
 	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
 }
 
 Audio::Mixer *OSystem_IPHONE::getMixer() {
diff --git a/backends/platform/n64/osys_n64_base.cpp b/backends/platform/n64/osys_n64_base.cpp
index ed2badb305..8f17171338 100644
--- a/backends/platform/n64/osys_n64_base.cpp
+++ b/backends/platform/n64/osys_n64_base.cpp
@@ -869,6 +869,7 @@ void OSystem_N64::getTimeAndDate(TimeDate &t) const {
 	t.tm_mday = 1;
 	t.tm_mon  = 0;
 	t.tm_year = 110;
+	t.tm_wday = 0;
 
 	return;
 }
diff --git a/backends/platform/ps2/ps2time.cpp b/backends/platform/ps2/ps2time.cpp
index 2c3275b2b2..1cddd230a0 100644
--- a/backends/platform/ps2/ps2time.cpp
+++ b/backends/platform/ps2/ps2time.cpp
@@ -105,8 +105,14 @@ void OSystem_PS2::readRtcTime(void) {
 		g_day, g_month, g_year + 2000);
 }
 
-void OSystem_PS2::getTimeAndDate(TimeDate &t) const {
+// Tomohiko Sakamoto's 1993 algorithm for any Gregorian date
+static int dayOfWeek(int y, int m, int d) {
+	static const int t[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
+	y -= m < 3;
+	return (y + y / 4 - y / 100 + y / 400 + t[m - 1] + d) % 7;
+}
 
+void OSystem_PS2::getTimeAndDate(TimeDate &t) const {
 	uint32 currentSecs = g_timeSecs + (msecCount - g_lastTimeCheck) / 1000;
 	if (currentSecs >= SECONDS_PER_DAY) {
 		buildNewDate(+1);
@@ -120,4 +126,5 @@ void OSystem_PS2::getTimeAndDate(TimeDate &t) const {
 	t.tm_year = g_year + 100;
 	t.tm_mday = g_day;
 	t.tm_mon  = g_month - 1;
+	t.tm_wday = dayOfWeek(t.tm_year, t.tm_mon, t.tm_mday);
 }
diff --git a/backends/platform/psp/osys_psp.cpp b/backends/platform/psp/osys_psp.cpp
index 0032fea072..fb8c1c60bf 100644
--- a/backends/platform/psp/osys_psp.cpp
+++ b/backends/platform/psp/osys_psp.cpp
@@ -446,6 +446,7 @@ void OSystem_PSP::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = t.tm_mday;
 	td.tm_mon = t.tm_mon;
 	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
 }
 
 Common::String OSystem_PSP::getDefaultConfigFileName() {
diff --git a/backends/platform/sdl/sdl.cpp b/backends/platform/sdl/sdl.cpp
index 8dff5cec05..d54854352d 100644
--- a/backends/platform/sdl/sdl.cpp
+++ b/backends/platform/sdl/sdl.cpp
@@ -486,6 +486,7 @@ void OSystem_SDL::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = t.tm_mday;
 	td.tm_mon = t.tm_mon;
 	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
 }
 
 Audio::Mixer *OSystem_SDL::getMixer() {
diff --git a/backends/platform/wii/osystem.cpp b/backends/platform/wii/osystem.cpp
index 258a782cc4..681675529a 100644
--- a/backends/platform/wii/osystem.cpp
+++ b/backends/platform/wii/osystem.cpp
@@ -269,6 +269,7 @@ void OSystem_Wii::getTimeAndDate(TimeDate &td) const {
 	td.tm_mday = t.tm_mday;
 	td.tm_mon = t.tm_mon;
 	td.tm_year = t.tm_year;
+	td.tm_wday = t.tm_wday;
 }
 
 void OSystem_Wii::showOptionsDialog() {
diff --git a/backends/platform/wince/wince-sdl.cpp b/backends/platform/wince/wince-sdl.cpp
index a57fcb9628..3897731db4 100644
--- a/backends/platform/wince/wince-sdl.cpp
+++ b/backends/platform/wince/wince-sdl.cpp
@@ -622,6 +622,7 @@ void OSystem_WINCE3::getTimeAndDate(TimeDate &t) const {
 	t.tm_hour   = systime.wHour;
 	t.tm_min    = systime.wMinute;
 	t.tm_sec    = systime.wSecond;
+	t.tm_wday   = systime.wDayOfWeek;
 }
 
 Common::String OSystem_WINCE3::getSystemLanguage() const {