Official

It is well known that many fires occurred during the Edo period, but among them, fires that broke out from Honmyoji Temple (now Bunkyo-ku) on January 18, 1657 (old calendar) in 1657, and burned out 60% of Edo city.
Near Edobashi, they cross the river and spread to Kayabacho, Hatchobori, Reiganjima, Tsukudajima and Ishikawajima.

According to documents from the Cabinet Office, the weather condition before the great fire of the Meiryaku era (both the kimono fire and Edo fire) had not rained for more than 80 days and had been very dry.
Therefore, although the scale and fire location are different, fires seemed to have occurred continuously on the night of New Year's Day, around 9:00 on the 2nd, around 22:00 on the 5th, and at midnight on the 9th.
The Great Fire of the Meiryaku era occurred when dry and strong winds overlapped, and it has been analyzed that the weather condition caused the damage.

[Reference Materials]
Chuo-ku "Chuo-ku History"
https://www.city.chuo.lg.jp/kusei/syokai/kuseiyoran.files/chuokuhistory.pdf
Cabinet Office "Draft of the Expert Study Committee on the Succession of Disaster Lessons" 1657 Edo Fire in the Meiryaku era "
http://www.bousai.go.jp/kohou/oshirase/h15/pdf/2-7.pdf

This is not an anniversary, but I'll introduce it because it's a great deal!
Dr. Shigeru Yonezawa (Joined Denden Corporation and later became Governor in a building near the information board of "Mitsuhashi Ruins" in Ginza 1-chome. There is a monument to start automatic telephone exchange engraved with "Automatic telephone exchange launch site" with the brush of the person who worked to improve the telecommunications service in Japan.
An automatic telephone exchange machine is a communication device that can be connected to the person who wants to make an automatic call based on the telephone number, and replaces the replacement operator manually.
Behind this was the fact that as the number of subscribers and the number of users increased, the process could not keep up.

This monument was unveiled on January 20, 1975 to commemorate the 50th anniversary of the exchange of the former Kyobashi telephone office.
At first glance, something that looks like a mysterious object is a stylized part of the circuit diagram of the telephone exchange at that time.
Now it's a convenient era where you can call the person you want without the help of an exchanger.
It is easy to take the convenience of the matter for granted, but sometimes I remembered the development of the technology on the street corner and wanted to thank the engineers.

[Reference Website]
NTT East "What is the technology behind the popularization of telephones?"
https://business.ntt-east.co.jp/content/nw_system/01.html

Currently, the postal system we use is that if you put a letter with a stamp of a national uniform rate in the post, it will reach the other party.
This system was started in U.K. in 1840, and in Japan, Tsukasa Maejima, who learned from U.K., worked hard to establish a modern postal system.
On January 24, 1871, the current postal system was enacted as the "postal rules", and from March 1 of the same year, postal services using post offices, post boxes, and stamps were started between Tokyo and Osaka!

The bust of Takashi Maejima, a contributor to Japan's postal business, can be seen at the birthplace of postal mail at Nihonbashi Post Office.
He is also the person depicted on a brown one-yen stamp!
When you receive a letter with a 1-yen stamp, why not take a look at the stamp again?