diff --git a/Features/detail/use-version-write-prjver-run.lua b/Features/detail/use-version-write-prjver-run.lua
index 56cd659..fbb234f 100644
--- a/Features/detail/use-version-write-prjver-run.lua
+++ b/Features/detail/use-version-write-prjver-run.lua
@@ -1,17 +1,22 @@
 local function GetSnapshotName(full) 
     local strYear = os.date("%y")
     local strMon = os.date("%m")
-    local iWeekOffset = tonumber(os.date("%w")) - 1
-    local iDayOffset = tonumber(os.date("%d"))
-    local iWeekIdxOffset = math.floor(iDayOffset / 7)
-    local bWeekTest = iWeekOffset > 2
+    local iWeekdayOffset = tonumber(os.date("%w"))
+    local iMonthOffset = tonumber(os.date("%d"))
+    if (iWeekdayOffset == 0) then iWeekdayOffset = 6
+    else  iWeekdayOffset = iWeekdayOffset - 1 end -- "b-but muh iso 8601" fuck off. I like me some sanely formatted date codes like anyone else, but Sunday is apart of the weekEND.
+                                                  -- global homo[-alist]s and uncritically thinking karens seethe.
+                                                  -- you know it's the retards advocating for this when they start fucking up the lua indexing pattern of starting at one
+    local iWeekIdxOffset = math.floor((iMonthOffset - iWeekdayOffset) / 7)
+    if (iWeekIdxOffset < 0) then iWeekIdxOffset = 0 end
+    local bWeekTest = iWeekdayOffset > 2
     local cWeekBase = "A"
     if (bWeekTest) then cWeekBase = "a" else cWeekBase = "A" end
-    if (iWeekIdxOffset > 4) then iWeekIdxOffset = 4 end
+    if (iWeekIdxOffset > 3) then iWeekIdxOffset = 3 end
     local cWeekChar = string.char(string.byte(cWeekBase) + iWeekIdxOffset) 
-    
     if (not full) then strYear = strYear:sub(2, 2)  end
-    return strYear .. strMon .. cWeekChar 
+    return strYear .. strMon .. cWeekChar
+         --     N     unalignedWeekOfTheMonth weekAlignedDayOfTheWeek (truncated to Aa - Dd)
 end
 
 local function DoAction()