src/app/routes/AppRoutes/AllAccounts.test.tsx

@@ -18,12 +18,21 @@ import type { IncomeAnalytics } from "@/entities/income";
 import type { Portfolio } from "@/entities/portfolio";
 
 import { AuthProvider } from "@/features/auth";
+import { defaultPeriod, formatDate } from "@/shared/lib";
 import { createTestQueryClient } from "@/test/query";
 import { resource } from "@/test/resource";
 import { server } from "@/test/server";
 
 import { AppRoutes } from "./AppRoutes";
 
+// Mantine calendar labels follow dayjs default (English) locale.
+function dayLabel(date: string) {
+	const monthName = new Intl.DateTimeFormat("en", { month: "long" })
+		.format(new Date(`${date}T12:00:00Z`));
+
+	return `${Number(date.slice(8))} ${monthName} ${date.slice(0, 4)}`;
+}
+
 const accounts = [
 	{ id: "a", name: "Основной" },
 	{ id: "b", name: "ИИС" },
@@ -233,7 +242,7 @@ describe("All accounts routes", () => {
 		);
 	});
 
-	it.each(["operations", "events", "income"])(
+	it.each(["operations", "income"])(
 		"restores applied dates when switching accounts in %s",
 		async (section) => {
 			const search = "?from=2026-08-01&to=2026-08-31";
@@ -261,6 +270,31 @@ describe("All accounts routes", () => {
 		},
 	);
 
+	it("restores applied dates when switching accounts in events", async () => {
+		// The events calendar blocks past dates, so pick within selectable dates.
+		const search = `?from=${defaultPeriod()[0]}&to=${defaultPeriod()[1]}`;
+		renderPage(`/accounts/all/events${search}`);
+		const picker = await screen.findByLabelText("Период");
+		fireEvent.click(picker);
+		const [fromDate, toDate] = defaultPeriod();
+		fireEvent.click(
+			await screen.findByRole("button", { name: dayLabel(fromDate) }),
+		);
+		fireEvent.click(
+			await screen.findByRole("button", { name: dayLabel(toDate) }),
+		);
+		expect(screen.getByLabelText("Период")).toHaveTextContent(
+			`${formatDate(fromDate)} – ${formatDate(toDate)}`,
+		);
+		fireEvent.click(screen.getByRole("combobox", { name: "Счёт" }));
+		fireEvent.click(await screen.findByRole("option", { name: "ИИС" }));
+		await waitFor(() =>
+			expect(screen.getByLabelText("Текущий путь")).toHaveTextContent(
+				`/accounts/b/events${search}`,
+			),
+		);
+	});
+
 	it("groups the same security and links its accounts and overview sections", async () => {
 		renderPage("/accounts/all");
 		expect(await screen.findAllByText("Сбербанк")).toHaveLength(1);

src/pages/account-events/ui/AccountEventsPage/AccountEventsPage.filters.test.tsx

@@ -20,7 +20,7 @@ import {
 import { beforeEach, describe, expect, it, vi } from "vitest";
 
 import { configureAuthClient } from "@/shared/api";
-import { defaultPeriod, formatDate } from "@/shared/lib";
+import { defaultPeriod, formatDate, moscowDate } from "@/shared/lib";
 import { createTestQueryClient } from "@/test/query";
 import { resource } from "@/test/resource";
 import { server } from "@/test/server";
@@ -253,37 +253,58 @@ describe("Upcoming event date filters", () => {
 			expect(from).toHaveTextContent("01.02.2026 – 28.02.2026");
 			expect(screen.getByRole("button", { name: "Применить" })).toBeDisabled();
 			expect(searches).toEqual(["?from=2026-02-01&to=2026-02-28"]);
-			fireEvent.click(from);
+
+			// The calendar opens on the applied month, so reset to the default
+			// range first, then pick today and a future date.
+			fireEvent.click(screen.getByRole("button", { name: "Сбросить" }));
+			await waitFor(() => expect(screen.getByLabelText("URL")).toBeEmptyDOMElement());
+			const picker = await screen.findByLabelText("Период");
+
+			const [today] = defaultPeriod();
+			const [year = 1970, month = 0, day = 1] = today.split("-").map(Number);
+
+			const future = moscowDate(new Date(
+				Date.UTC(year, month - 1, day + 10, 12),
+			));
+
+			// Mantine calendar labels follow dayjs default (English) locale.
+			const calendarLabel = (date: string) => {
+				const monthName = new Intl.DateTimeFormat("en", { month: "long" })
+					.format(new Date(`${date}T12:00:00Z`));
+
+				const pattern = `${Number(date.slice(8))} ${monthName} ${date.slice(0, 4)}`;
+
+				// Dates are constructed above from validated defaultPeriod output.
+				// eslint-disable-next-line security/detect-non-literal-regexp -- see comment above
+				return new RegExp(pattern, "i");
+			};
+
+			fireEvent.click(picker);
 			fireEvent.click(
-				await screen.findByRole("button", { name: /10 February 2026/i }),
+				await screen.findByRole("button", { name: calendarLabel(today) }),
 			);
 			fireEvent.click(
-				await screen.findByRole("button", { name: /28 February 2026/i }),
+				await screen.findByRole("button", { name: calendarLabel(future) }),
 			);
-			expect(searches).toHaveLength(1);
+			// The reset itself fetched the default range; picking dates applies only on submit.
+			expect(searches).toEqual([
+				"?from=2026-02-01&to=2026-02-28",
+				`?from=${defaultFrom}&to=${defaultTo}`,
+			]);
 			fireEvent.click(screen.getByRole("button", { name: "Применить" }));
 			await waitFor(() =>
-				expect(searches.at(-1)).toBe("?from=2026-02-10&to=2026-02-28"),
+				expect(searches.at(-1)).toBe(`?from=${today}&to=${future}`),
 			);
 			expect(await screen.findByLabelText("Период")).toHaveTextContent(
-				"10.02.2026 – 28.02.2026",
+				`${formatDate(today)} – ${formatDate(future)}`,
 			);
 			fireEvent.click(screen.getByRole("button", { name: "History back" }));
 			await waitFor(() =>
 				expect(screen.getByLabelText("Период")).toHaveTextContent(
-					"01.02.2026 – 28.02.2026",
+					`${formatDate(defaultFrom)} – ${formatDate(defaultTo)}`,
 				),
 			);
-			expect(screen.getByLabelText("URL")).toHaveTextContent(
+			expect(screen.getByLabelText("URL")).toBeEmptyDOMElement();
-				"?from=2026-02-01&to=2026-02-28",
-			);
-			fireEvent.click(screen.getByRole("button", { name: "Сбросить" }));
-			await waitFor(() =>
-				expect(searches.at(-1)).toBe(`?from=${defaultFrom}&to=${defaultTo}`),
-			);
-			expect(await screen.findByLabelText("Период")).toHaveTextContent(
-				`${formatDate(defaultFrom)} – ${formatDate(defaultTo)}`,
-			);
 			expect(screen.getByRole("button", { name: "Применить" })).toBeDisabled();
 			expect(
 				screen.getByText("За выбранный период событий не найдено"),

src/pages/account-events/ui/AccountEventsPage/AccountEventsPage.vm.ts

@@ -21,7 +21,7 @@ type AccountEventsPageViewModel
 		canApply: boolean;
 		draftPeriod: [null | string, null | string];
 		events: BrokerageEvent[];
-		maxDate: string;
+		minDate: string;
 		onApply: () => void;
 		onPeriodChange: (value: [null | string, null | string]) => void;
 		onPeriodPopoverOpen: () => void;
@@ -49,7 +49,7 @@ function useAccountEventsPageViewModel(): AccountEventsPageViewModel {
 
 	const [draftFrom, draftTo] = draftPeriod;
 
-	const [maxDate, setMaxDate] = useState(() => moscowDate(new Date()));
+	const [minDate, setMinDate] = useState(() => moscowDate(new Date()));
 
 	const scope = JSON.stringify([accountId, appliedFrom, appliedTo]);
 	const [previousScope, setPreviousScope] = useState(scope);
@@ -105,7 +105,7 @@ function useAccountEventsPageViewModel(): AccountEventsPageViewModel {
 			&& isValidPeriod(draftFrom, draftTo),
 		draftPeriod,
 		events: events.data.events,
-		maxDate,
+		minDate,
 		onApply: () => {
 			if (!isValidPeriod(draftFrom, draftTo)) return;
 			setSearchParameters({
@@ -116,7 +116,7 @@ function useAccountEventsPageViewModel(): AccountEventsPageViewModel {
 		onPeriodChange: value => setDraftPeriod(
 			value[0] === null && value[1] === null ? defaultPeriod() : value,
 		),
-		onPeriodPopoverOpen: () => setMaxDate(moscowDate(new Date())),
+		onPeriodPopoverOpen: () => setMinDate(moscowDate(new Date())),
 		onReset,
 		partial: events.meta?.completeness === "incomplete",
 		source: events.meta,

src/pages/account-events/ui/AccountEventsPage/components/AccountEventsPageLoaded.view.tsx

@@ -72,7 +72,7 @@ const AccountEventsPageLoaded: FC<AccountEventsPageLoadedProps> = (props) => {
 					clearable
 					clearButtonProps={{ "aria-label": t("ledger.clearPeriod") }}
 					label={t("ledger.period")}
-					maxDate={props.maxDate}
+					minDate={props.minDate}
 					onChange={props.onPeriodChange}
 					popoverProps={{
 						middlewares: { shift: { crossAxis: true } },

src/shared/lib/calendar.test.ts

@@ -38,11 +38,11 @@ describe("calendar dates", () => {
 		expect(moscowDate(new Date("2026-12-31T21:00:00Z"))).toBe("2027-01-01");
 	});
 
-	it("defaults to the last 7 days including today", () => {
+	it("defaults to 7 calendar dates starting with today", () => {
 		const [from, to] = defaultPeriod();
 
 		expect(calendarDate.safeParse(from).success).toBe(true);
-		expect(to).toBe(moscowDate(new Date()));
+		expect(from).toBe(moscowDate(new Date()));
 		expect((Date.parse(to) - Date.parse(from)) / 86_400_000).toBe(6);
 		expect(from <= to).toBe(true);
 	});

src/shared/lib/calendar.ts

@@ -9,8 +9,7 @@ function isValidPeriod(from: null | string, to: null | string) {
 	);
 }
 
-const DAY_MS = 86_400_000;
+const DEFAULT_PERIOD_LAST_INDEX = 6;
-const DEFAULT_PERIOD_DAYS = 6;
 
 const moscowFormatter = new Intl.DateTimeFormat("en-CA", {
 	day: "2-digit",
@@ -25,12 +24,17 @@ function compareDateDesc(a: null | string, b: null | string) {
 	return (b ?? "").localeCompare(a ?? "");
 }
 
-// Last 7 days including today. An empty period always means this range.
+// 7 calendar dates starting with today (Moscow calendar arithmetic).
 function defaultPeriod(): [string, string] {
-	const to = new Date();
+	const from = moscowDate(new Date());
-	const from = new Date(to.getTime() - DEFAULT_PERIOD_DAYS * DAY_MS);
 
-	return [moscowDate(from), moscowDate(to)];
+	const [year = 1970, month = 0, day = 1] = from.split("-").map(Number);
+	const noon = 12;
+	const lastDay = day + DEFAULT_PERIOD_LAST_INDEX;
+	const end = new Date(Date.UTC(year, month - 1, lastDay, noon));
+	const to = moscowDate(end);
+
+	return [from, to];
 }
 
 function moscowDate(value: Date): string {