Matsuya Expands to 24-Hour Operation at 4 Stores, Including 3 in Chiba Prefecture, All at Once

At 9:44 AM on May 25, 2026, the operating hours listed for 4 stores on the Matsuya official site were changed all at once to “24-hour operation.” Three of the stores are in Chiba Prefecture (Kitakogane Store, Chiba Abiko Store, and Matsudo Matsuhidai Store), each expanding from “4:00 AM to 3:00 AM the following day, last order 5 minutes before close” (23-hour operation). The remaining store is Kaminoyama Store in Yamagata Prefecture, which expanded from “5:00 AM to 2:00 AM the following day” (21-hour operation).

Changes at the 4 Stores

Store	Location	Previous Hours	New Hours	Hours Added	Co-located Brand
Matsuya Kitakogane Store (0204)	3-20-5 Koganekiyoshigaoka, Matsudo City, Chiba Prefecture	4:00 AM to 3:00 AM the following day, last order 5 minutes before close (23 hours)	24-hour operation	+1 hour (early-morning hour from 3:00 to 4:00 AM)	None
Matsuya Chiba Abiko Store (0373)	Plaza Building 1F, 2-3-2 Honcho, Abiko City, Chiba Prefecture	4:00 AM to 3:00 AM the following day, last order 5 minutes before close (23 hours)	24-hour operation	+1 hour (early-morning hour from 3:00 to 4:00 AM)	None
Matsuya Matsudo Matsuhidai Store (1789)	259-5 Matsuhidai, Matsudo City, Chiba Prefecture	4:00 AM to 3:00 AM the following day, last order 5 minutes before close (23 hours)	24-hour operation	+1 hour (early-morning hour from 3:00 to 4:00 AM)	None
Matsuya Kaminoyama Store (1846)	774-1 Umenoki, Sengoku, Kaminoyama City, Yamagata Prefecture	5:00 AM to 2:00 AM the following day (21 hours)	24-hour operation	+3 hours (block from 2:00 to 5:00 AM)	Matsunoya

The pre-change hours listing for the 3 Chiba stores matched exactly across all three, suggesting they had been operated under a shared framework. With this update, all 3 stores newly incorporated the early-morning hour from 3:00 to 4:00 AM into their operating hours.

The 3 Chiba Stores Unified from the Same 23-Hour Pattern to 24-Hour Operation

The pre-change listing of “4:00 AM to 3:00 AM the following day, last order 5 minutes before close” was identical across the 3 stores, and after the change all 3 aligned to the same 24-hour operation. The 3 stores are located with 2 in Matsudo City and 1 in Abiko City, both residential areas in northwestern Chiba Prefecture.

City	Number of Stores
Matsudo City	2 stores (Kitakogane Store, Matsudo Matsuhidai Store)
Abiko City	1 store (Chiba Abiko Store)

Matsuya operates 75 stores in Chiba Prefecture in total, and with these 3 stores aligning to 24-hour operation at the same time, the number of 24-hour stores in Chiba Prefecture increased by 3.

Yamagata’s Kaminoyama Store, Co-located with Matsunoya, Expands from 21 to 24 Hours

Kaminoyama Store in Yamagata Prefecture is co-located with Matsunoya, and expanded by 3 hours from its previous 21-hour operation of “5:00 AM to 2:00 AM the following day” to 24-hour operation. This is a larger expansion than the 3 Chiba stores (each expanding by 1 hour from 23-hour operation), newly incorporating the 3-hour block from 2:00 to 5:00 AM into its operating hours. The store’s Matsunoya co-location remains unchanged in its store name listing, and no separate Matsunoya operating-hours notation was added in this update.

Part of a Series of 4 Cases in May’s Trend Toward Expanded Operating Hours

Lining up Matsuya’s moves toward expanded operating hours since the start of May, this Monday-morning simultaneous update took place at the same “Monday morning” timing as the 7-store simultaneous expansion on May 18.

Date/Time	Store(s) Affected	Details
May 11, 2026	Matsuya Ningyocho Store	Eliminated the Monday pre-dawn closure, moving to full 24-hour operation
May 15, 2026, 10:02 AM	Matsuya Shin-Koenji Store	Returned to 24-hour operation from 8:00 AM to 10:00 PM
May 18, 2026, 9:26 AM (Monday morning)	Musashimurayama Store, Oyamadai Store, and 5 others (7 stores total)	4 stores moved to 24-hour operation, 2 stores extended their hours, and 1 store removed a separate shortened-hours notation for its Matsunoya co-location
May 21, 2026, 5:56 PM	Matsuya Kiyose Noshio Store	Expanded from 5:00 AM to 2:00 AM the following day to 24-hour operation
May 25, 2026, 9:44 AM (this update, Monday morning)	4 stores: 3 in Chiba Prefecture and Kaminoyama Store	All stores expanded to 24-hour operation

This marks the second “Monday-morning simultaneous expansion,” following May 18, and with these 4 stores added, the cumulative number of stores moving toward 24-hour operation in May reaches roughly 12 stores for the month.