Index: src/ch/ch.rc
===================================================================
diff -u -N -r30297d6aab17483da8e7b8323b4d17ff1a9f78d6 -r6a71d60b7ab5489db9ffc75784557e713df9a52f
--- src/ch/ch.rc	(.../ch.rc)	(revision 30297d6aab17483da8e7b8323b4d17ff1a9f78d6)
+++ src/ch/ch.rc	(.../ch.rc)	(revision 6a71d60b7ab5489db9ffc75784557e713df9a52f)
@@ -348,13 +348,13 @@
     CONTROL         "DateTimePicker1",IDC_DATE1_DATETIMEPICKER,
                     "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP,108,157,109,15,0,HIDC_DATE1_DATETIMEPICKER
     CONTROL         "DateTimePicker2",IDC_TIME1_DATETIMEPICKER,
-                    "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP,220,157,64,15,0,HIDC_TIME1_DATETIMEPICKER
+                    "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP | 0x8,220,157,64,15,0,HIDC_TIME1_DATETIMEPICKER
     CONTROL         "and",IDC_DATE2_CHECK,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,25,176,30,10,0,HIDC_DATE2_CHECK
     COMBOBOX        IDC_DATE2TYPE_COMBO,58,174,48,107,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP,0,HIDC_DATE2TYPE_COMBO
     CONTROL         "DateTimePicker1",IDC_DATE2_DATETIMEPICKER,
                     "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP,108,173,109,15,0,HIDC_DATE2_DATETIMEPICKER
     CONTROL         "DateTimePicker2",IDC_TIME2_DATETIMEPICKER,
-                    "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP,220,173,64,15,0,HIDC_TIME2_DATETIMEPICKER
+                    "SysDateTimePick32",DTS_RIGHTALIGN | DTS_UPDOWN | DTS_SHOWNONE | WS_TABSTOP | 0x8,220,173,64,15,0,HIDC_TIME2_DATETIMEPICKER
     CONTROL         "By attributes",IDC_ATTRIBUTES_CHECK,"Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,199,277,10,0,HIDC_ATTRIBUTES_CHECK
     CONTROL         "Archive",IDC_ARCHIVE_CHECK,"Button",BS_AUTO3STATE | WS_TABSTOP,29,212,81,10,0,HIDC_ARCHIVE_CHECK
     CONTROL         "Read only",IDC_READONLY_CHECK,"Button",BS_AUTO3STATE | WS_TABSTOP,29,224,81,10,0,HIDC_READONLY_CHECK
Index: src/libchcore/TDateTime.cpp
===================================================================
diff -u -N -rb193a95402f2bf4c456fb9d65d111caaf6994823 -r6a71d60b7ab5489db9ffc75784557e713df9a52f
--- src/libchcore/TDateTime.cpp	(.../TDateTime.cpp)	(revision b193a95402f2bf4c456fb9d65d111caaf6994823)
+++ src/libchcore/TDateTime.cpp	(.../TDateTime.cpp)	(revision 6a71d60b7ab5489db9ffc75784557e713df9a52f)
@@ -180,8 +180,6 @@
 	err = _localtime64_s(&tOtherTimeInfo, &rOtherDateTime.m_tTime);
 	if(err != 0)
 		THROW_CORE_EXCEPTION(eErr_InvalidData);
-	if(tThisTimeInfo.tm_isdst != tOtherTimeInfo.tm_isdst)
-		THROW_CORE_EXCEPTION(eErr_InternalProblem);
 
 	time_t tDiffDateTime = 0;
 	if(bCompareDate)