From 71b4db8e108534113d12c8b80a127ea4b365d6d8 Mon Sep 17 00:00:00 2001
From: Leo Vasanko <leo@git>
Date: Sun, 24 Aug 2025 10:13:42 -0600
Subject: [PATCH] Date processing cleanup.

---
 src/components/CalendarView.vue | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/components/CalendarView.vue b/src/components/CalendarView.vue
index 27b41b8..92948e1 100644
--- a/src/components/CalendarView.vue
+++ b/src/components/CalendarView.vue
@@ -19,7 +19,7 @@ import {
   getISOWeek,
 } from '@/utils/date'
 import { toLocalString, fromLocalString, DEFAULT_TZ } from '@/utils/date'
-import { addDays, differenceInCalendarDays } from 'date-fns'
+import { addDays, differenceInCalendarDays, differenceInWeeks } from 'date-fns'
 import { getHolidayForDate } from '@/utils/holidays'
 
 const calendarStore = useCalendarStore()
@@ -52,20 +52,18 @@ const lastTapTime = ref(0)
 const lastTapDate = ref(null)
 const DOUBLE_TAP_DELAY = 300 // milliseconds
 
-const WEEK_MS = 7 * 24 * 60 * 60 * 1000
-
 const minVirtualWeek = computed(() => {
   const date = new Date(calendarStore.minYear, 0, 1)
   const dayOffset = (date.getDay() - calendarStore.config.first_day + 7) % 7
   const firstDayOfWeek = addDays(date, -dayOffset)
-  return Math.floor((firstDayOfWeek.getTime() - baseDate.value.getTime()) / WEEK_MS)
+  return differenceInWeeks(firstDayOfWeek, baseDate.value)
 })
 
 const maxVirtualWeek = computed(() => {
   const date = new Date(calendarStore.maxYear, 11, 31)
   const dayOffset = (date.getDay() - calendarStore.config.first_day + 7) % 7
   const firstDayOfWeek = addDays(date, -dayOffset)
-  return Math.floor((firstDayOfWeek.getTime() - baseDate.value.getTime()) / WEEK_MS)
+  return differenceInWeeks(firstDayOfWeek, baseDate.value)
 })
 
 const totalVirtualWeeks = computed(() => {
@@ -127,7 +125,7 @@ function computeRowHeight() {
 function getWeekIndex(date) {
   const dayOffset = (date.getDay() - calendarStore.config.first_day + 7) % 7
   const firstDayOfWeek = addDays(date, -dayOffset)
-  return Math.floor((firstDayOfWeek.getTime() - baseDate.value.getTime()) / WEEK_MS)
+  return differenceInWeeks(firstDayOfWeek, baseDate.value)
 }
 
 function getFirstDayForVirtualWeek(virtualWeek) {