diff --git a/code/__DEFINES/misc.dm b/code/__DEFINES/misc.dm
index be2495aac44..13a4c60d3ef 100644
--- a/code/__DEFINES/misc.dm
+++ b/code/__DEFINES/misc.dm
@@ -460,17 +460,20 @@ example:
 
 //Map template flags
 /// Lets multiple copies of the template to be spawned
-#define TEMPLATE_FLAG_ALLOW_DUPLICATES 1
-/// Makes it ignore away site budget and just spawn (works only for away sites)
+#define TEMPLATE_FLAG_ALLOW_DUPLICATES BITFLAG(1)
+/// If it should ignore away site budget and just spawn (works only for away sites)
 /// A site needs to be set to spawn in current sector to be considered still
-#define TEMPLATE_FLAG_SPAWN_GUARANTEED 2
-/// if it should destroy objects it spawns on top of
-#define TEMPLATE_FLAG_CLEAR_CONTENTS   4
-/// if it should forbid ruins from spawning on top of it
-#define TEMPLATE_FLAG_NO_RUINS         8
+#define TEMPLATE_FLAG_SPAWN_GUARANTEED BITFLAG(2)
+/// If it should destroy objects it spawns on top of
+#define TEMPLATE_FLAG_CLEAR_CONTENTS   BITFLAG(3)
+/// If it should forbid ruins from spawning on top of it
+#define TEMPLATE_FLAG_NO_RUINS         BITFLAG(4)
+/// If it should always spawn if today is a port of call day
+#define TEMPLATE_FLAG_PORT_SPAWN       BITFLAG(5)
 
 //Ruin map template flags
-#define TEMPLATE_FLAG_RUIN_STARTS_DISALLOWED 32  // Ruin is not available during spawning unless another ruin permits it, or whitelisted by the exoplanet
+/// Ruin is not available during spawning unless another ruin permits it, or whitelisted by the exoplanet
+#define TEMPLATE_FLAG_RUIN_STARTS_DISALLOWED BITFLAG(6)
 
 #define LANDING_ZONE_RADIUS 15 // Used for autoplacing landmarks on exoplanets
 
diff --git a/code/controllers/subsystems/initialization/atlas.dm b/code/controllers/subsystems/initialization/atlas.dm
index ae14bc986a3..4e627df880b 100644
--- a/code/controllers/subsystems/initialization/atlas.dm
+++ b/code/controllers/subsystems/initialization/atlas.dm
@@ -302,6 +302,18 @@ SUBSYSTEM_DEF(atlas)
 	if (!possible_sectors.len)
 		crash_with("No space sectors located in SSatlas.")
 
+/// Checks if today is a Port of Call day at current_sector.
+/// Returns FALSE if no port_of_call defined in current_map.ports_of_call, or if today is not listed as a Port of Call day in current_sector.scheduled_port_visits
+/datum/controller/subsystem/atlas/proc/is_port_call_day()
+	if(!current_map || !current_sector)
+		return FALSE
+	if(current_map.ports_of_call && length(current_sector.scheduled_port_visits))
+		/// Get today
+		var/today = GLOB.all_days[GLOB.all_days.Find(time2text(world.realtime, "Day"))]
+		if(today in current_sector.scheduled_port_visits) //checks if today is a port of call day
+			return TRUE
+	return FALSE
+
 // Called when there's a fatal, unrecoverable error in mapload. This reboots the server.
 /world/proc/map_panic(reason)
 	to_chat(world, "<span class='danger'>Fatal error during map setup, unable to continue! Server will reboot in 60 seconds.</span>")
diff --git a/code/modules/background/space_sectors/coalition/coalition.dm b/code/modules/background/space_sectors/coalition/coalition.dm
index 6fd68311d95..94febaa56dd 100644
--- a/code/modules/background/space_sectors/coalition/coalition.dm
+++ b/code/modules/background/space_sectors/coalition/coalition.dm
@@ -65,7 +65,7 @@
 	cargo_price_coef = list("nt" = 1.1, "hpi" = 0.7, "zhu" = 0.4, "een" = 1.0, "get" = 1.1, "arz" = 1.8, "blm" = 0.9, "iac" = 1.2, "zsc" = 1.8, "vfc" = 0.9, "bis" = 0.4, "xmg" = 0.7, "npi" = 0.8)
 
 	ports_of_call = list("the corporate district of Aoyama")
-	scheduled_port_visits = list("Thursday", "Sunday")
+	scheduled_port_visits = list("Saturday", "Sunday")
 	starlight_color = "#e2719b"
 	starlight_power = 2//placeholder
 	starlight_range = 4//placeholder
diff --git a/code/modules/background/space_sectors/space_sector.dm b/code/modules/background/space_sectors/space_sector.dm
index cce9ddd4c75..a8345f605b4 100644
--- a/code/modules/background/space_sectors/space_sector.dm
+++ b/code/modules/background/space_sectors/space_sector.dm
@@ -136,7 +136,7 @@
 /datum/space_sector/proc/setup_current_sector()
 	SHOULD_CALL_PARENT(TRUE)
 
-	if(SSatlas.current_map.ports_of_call && length(scheduled_port_visits))
+	if(SSatlas.current_map.ports_of_call && length(SSatlas.current_sector.scheduled_port_visits))
 		var/current_day_index = GLOB.all_days.Find(time2text(world.realtime, "Day"))
 		var/days_calculated = 0
 		// The main problem to consider here is that you have to loop around for two weeks to find all the days, basically.
@@ -151,7 +151,7 @@
 			next_port_visit = current_day_index
 			break
 
-		next_port_visit_string = days_calculated == 0 ? "today" : days_calculated == 1 ? "in [days_calculated] day" : "in [days_calculated] days"
+		next_port_visit_string = days_calculated == 0 ? "Today" : days_calculated == 1 ? "in [days_calculated] day" : "in [days_calculated] days"
 
 	// For now, i've put processing to only happen if the sector has a radio station
 	// but if, in the future, you add more stuff for the processor to handle, feel free to move it out of the if block
diff --git a/code/modules/maps/ruins.dm b/code/modules/maps/ruins.dm
index 36f025de5f8..261f08ea142 100644
--- a/code/modules/maps/ruins.dm
+++ b/code/modules/maps/ruins.dm
@@ -41,6 +41,17 @@ GLOBAL_LIST_EMPTY(banned_ruin_ids)
 			handled_ruin_paths += ruin.type
 			continue
 
+		if((ruin.template_flags & TEMPLATE_FLAG_PORT_SPAWN))
+			if(SSatlas.is_port_call_day())
+				force_spawn |= ruin
+				for(var/ruin_path in ruin.force_ruins)
+					var/datum/map_template/ruin/force_ruin = new ruin_path
+					force_spawn |= force_ruin
+			// No matter if it spawns or not, we want it removed from further consideration, it either spawns here or not at all
+			potentialRuins -= ruin
+			handled_ruin_paths += ruin.type
+			continue
+
 		available[ruin] = ruin.spawn_weight
 
 		for(var/ruin_path in ruin.allow_ruins)
diff --git a/html/changelogs/Ben10083 - PortofCall.yml b/html/changelogs/Ben10083 - PortofCall.yml
new file mode 100644
index 00000000000..b9d88bc2142
--- /dev/null
+++ b/html/changelogs/Ben10083 - PortofCall.yml	
@@ -0,0 +1,44 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: Ben10083
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - rscdel: "Point Verdant now only spawns when the day is a Port of Call day."
+  - backend: "New template flag for ruins added, flag has ruin always spawn when today is a Port of Call, otherwise will not spawn."
+  - tweak: "Haneunim port of call days now Saturday and Sunday"
+  - backend: "New atlas subsystem proc to check if today is a port of call day."
diff --git a/maps/_common/mapsystem/map.dm b/maps/_common/mapsystem/map.dm
index 4a6a7944c26..6e8e3a5dc3c 100644
--- a/maps/_common/mapsystem/map.dm
+++ b/maps/_common/mapsystem/map.dm
@@ -269,6 +269,11 @@
 			guaranteed += site
 			if ((site.template_flags & TEMPLATE_FLAG_ALLOW_DUPLICATES) && !(site.template_flags & TEMPLATE_FLAG_RUIN_STARTS_DISALLOWED))
 				available[site] = site.spawn_weight
+		else if((site.template_flags & TEMPLATE_FLAG_PORT_SPAWN) && (site.spawns_in_current_sector()))
+			if(SSatlas.is_port_call_day()) //we check here as we only want sites with PORT_SPAWN flag to spawn if this is true, else we want it not considered.
+				guaranteed += site
+				if ((site.template_flags & TEMPLATE_FLAG_ALLOW_DUPLICATES) && !(site.template_flags & TEMPLATE_FLAG_RUIN_STARTS_DISALLOWED))
+					available[site] = site.spawn_weight
 		else if (!(site.template_flags & TEMPLATE_FLAG_RUIN_STARTS_DISALLOWED) && (site.spawns_in_current_sector()))
 			available[site] = site.spawn_weight
 		by_type[site.type] = site
diff --git a/maps/away/away_site/konyang/point_verdant/point_verdant.dm b/maps/away/away_site/konyang/point_verdant/point_verdant.dm
index 3aae6b4183b..9a67b21daad 100644
--- a/maps/away/away_site/konyang/point_verdant/point_verdant.dm
+++ b/maps/away/away_site/konyang/point_verdant/point_verdant.dm
@@ -6,7 +6,7 @@
 	suffixes = list("away_site/konyang/point_verdant/point_verdant-1.dmm","away_site/konyang/point_verdant/point_verdant-2.dmm","away_site/konyang/point_verdant/point_verdant-3.dmm")
 	spawn_weight = 1
 	spawn_cost = 1
-	template_flags = TEMPLATE_FLAG_SPAWN_GUARANTEED
+	template_flags = TEMPLATE_FLAG_PORT_SPAWN
 
 	unit_test_groups = list(2)