diff --git a/src/saveload/extended_ver_sl.cpp b/src/saveload/extended_ver_sl.cpp
index be40cad17b..d005143f1f 100644
--- a/src/saveload/extended_ver_sl.cpp
+++ b/src/saveload/extended_ver_sl.cpp
@@ -45,6 +45,7 @@ std::vector<uint32> _sl_xv_discardable_chunk_ids;           ///< list of chunks
 static const uint32 _sl_xv_slxi_chunk_version = 0;          ///< current version os SLXI chunk
 
 const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
+	{ XSLFI_VARIABLE_DAY_LENGTH,    XSCF_NULL,              1,                                    1, "variable_day_length",   NULL, NULL, NULL        },
 	{ XSLFI_NULL, XSCF_NULL, 0, 0, NULL, NULL, NULL, NULL },// This is the end marker
 };
 
diff --git a/src/saveload/extended_ver_sl.h b/src/saveload/extended_ver_sl.h
index 39a03478c2..bc1335a09a 100644
--- a/src/saveload/extended_ver_sl.h
+++ b/src/saveload/extended_ver_sl.h
@@ -21,6 +21,7 @@
  */
 enum SlXvFeatureIndex {
 	XSLFI_NULL                          = 0,      ///< Unused value, to indicate that no extended feature test is in use
+	XSLFI_VARIABLE_DAY_LENGTH,                    ///< Variable day length patch
 
 	XSLFI_SIZE,                                   ///< Total count of features, including null feature
 };
diff --git a/src/saveload/misc_sl.cpp b/src/saveload/misc_sl.cpp
index 50f7beec19..e25a8f78ba 100644
--- a/src/saveload/misc_sl.cpp
+++ b/src/saveload/misc_sl.cpp
@@ -75,7 +75,7 @@ static const SaveLoadGlobVarList _date_desc[] = {
 	SLEG_CONDVAR(_date,                   SLE_INT32,                  31, SL_MAX_VERSION),
 	    SLEG_VAR(_date_fract,             SLE_UINT16),
 	    SLEG_VAR(_tick_counter,           SLE_UINT16),
-	SLEG_CONDVAR(_tick_skip_counter,      SLE_UINT8,                 200, SL_MAX_VERSION),
+	SLEG_CONDVAR_X(_tick_skip_counter,    SLE_UINT8,                   0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_VARIABLE_DAY_LENGTH)),
 	SLE_CONDNULL(2, 0, 156), // _vehicle_id_ctr_day
 	SLEG_CONDVAR(_age_cargo_skip_counter, SLE_UINT8,                   0, 161),
 	SLE_CONDNULL(1, 0, 45),
@@ -101,7 +101,7 @@ static const SaveLoadGlobVarList _date_check_desc[] = {
 	SLEG_CONDVAR(_load_check_data.current_date,  SLE_INT32,                  31, SL_MAX_VERSION),
 	    SLE_NULL(2),                       // _date_fract
 	    SLE_NULL(2),                       // _tick_counter
-	SLEG_CONDVAR(_tick_skip_counter,             SLE_UINT8,                 200, SL_MAX_VERSION),
+	SLEG_CONDVAR_X(_tick_skip_counter,           SLE_UINT8,                   0, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_VARIABLE_DAY_LENGTH)),
 	SLE_CONDNULL(2, 0, 156),               // _vehicle_id_ctr_day
 	SLE_CONDNULL(1, 0, 161),               // _age_cargo_skip_counter
 	SLE_CONDNULL(1, 0, 45),
diff --git a/src/table/settings.ini b/src/table/settings.ini
index bbd6b3c526..c7f1c134d7 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -1268,7 +1268,6 @@ cat      = SC_BASIC
 base     = GameSettings
 var      = economy.day_length_factor
 type     = SLE_UINT8
-from     = 200
 def      = 1
 min      = 1
 max      = 125
@@ -1276,6 +1275,8 @@ str      = STR_CONFIG_SETTING_DAY_LENGTH_FACTOR
 strhelp  = STR_CONFIG_SETTING_DAY_LENGTH_FACTOR_HELPTEXT
 strval   = STR_JUST_COMMA
 cat      = SC_BASIC
+extver   = SlXvFeatureTest(XSLFTO_AND, XSLFI_VARIABLE_DAY_LENGTH)
+patxname = ""variable_day_length.economy.day_length_factor""
 
 [SDT_VAR]
 base     = GameSettings