Matsuya Sendai Ichibancho Store's Latitude Shifts South for the Second Time in One Day, by 0.000001 Degrees

The store information on Matsuya’s official website shows that the latitude of Matsuya Sendai Ichibancho Store (2260) has shifted about 11cm to the south. This is the 7th time the latitude has shifted south in increments of 0.000001 degrees, and it marks the second such shift on this same July 14. The longitude remains unchanged, so the move is a tiny nudge due south.

Only the Latitude Changed — Longitude Stays Put

Only the latitude field was updated this time. The change is as follows.

Item	Before	After
Latitude	38.2621371	38.2621361
Longitude	140.871156	140.871156 (unchanged)
Address / Business Hours	Unchanged	Unchanged

The difference is 0.0000010 degrees, which translates to roughly 0.11m — about 11cm — on the ground. Since the longitude hasn’t moved at all, the direction of the shift is due south. There is no change to the store’s actual conditions, such as address, business hours, or its Matsunoya co-located status, suggesting this is a minor update to the coordinate values alone rather than the store physically moving.

A One-Way Southward Drift Since April 25

Starting April 25, the latitude of Matsuya Sendai Ichibancho Store has moved consistently southward by 0.0000010 degrees with every update. It ticked south on May 7, June 19, June 22, and June 24, reaching a cumulative shift of about 55cm as of June 24. With this 7th shift, the cumulative total now stands at roughly 77cm south. Throughout this period, the longitude has never moved from 140.871156. The asymmetry is striking — only the latitude keeps drifting, by the same amount, in the same direction.

What stands out is that this is the second southward shift on this particular day. On July 14, it was first reported that five stores, including Sendai Ichibancho, shifted south together by the same 0.000001 degrees. As if picking up that thread, Sendai Ichibancho Store alone then took one more step south on its own, later the same day.

This phenomenon of the latitude alone creeping south in small increments isn’t unique to this store — it’s been observed at around 10 stores nationwide, including No.8 Nagahama Store (2224) and Miyakojima Tomobuchicho Store (2214). Among them, Sendai Ichibancho Store ranks among those with the most occurrences, though in every case it remains within the range of coordinate fluctuation, with no accompanying change to the store’s operating conditions.

A Battleground Packed with 4 Matsuya Stores Within an 800m Radius

Matsuya Sendai Ichibancho Store sits in the heart of downtown Ichibancho, Aoba Ward, Sendai. Based on a rough calculation from its coordinates, it’s joined within an 800m radius by Matsuya Sendai Minamimachidori Store (0602, about 470m away), Matsuya Sendai Jozenjidori Store (0623, about 490m away), and Matsuya Sendai Chuo Store (0600, about 760m away) — making this a fiercely contested area with 4 Matsuya stores clustered together. Of the 16 stores currently operating in Miyagi Prefecture, 7 are co-located with Matsunoya, and Sendai Ichibancho is one of them. Tucked into a corner of downtown, this store’s 11cm-at-a-time southward march continues as a microscopic journey that no map scale could ever capture.