The Mt. Takao official site shows the graph until late April, but it says beyond the blooming viewing period.
https://www.ces-net.jp/takaovc/wordpress/wp-content/uploads/2018/07/02...For 2022 (Itchodaira), WeatherNews predicts Sakura Brizaard (the end of the season) will be on Apr 16.
https://weathernews.jp/s/sakura/spot/4460/I have dared to survey sakura predictions for Apr 22 with their tool.
https://weathernews.jp/s/sakura/search_date_result.html?pref=IWATE&mon...Here is the list of their Sakura sites sorting the earliest arrival time departed from Tokyo station.
4/14-4/23 7:42 Yuzawa
280 Beni-yamazakura
https://weathernews.jp/s/sakura/spot/54001/https://www.google.com/maps?q=36.9356,138.8219The earliest arrival time for Yuzawa is 7:42. The peak will be Apr 14. Sakura Brizaard is on Apr 23. Note that Beniyamazakura is different from typical Sakura, Somei Yoshino.
4/26-5/1 8:04 Rinnoji@Nikko
1 Kongozakura
https://weathernews.jp/s/sakura/spot/4108/https://www.google.com/maps?q=36.7549,139.6006There is only one non-typical Sakura. The peak will not come by Apr 22.
4/15-4/26 8:12 Komoro
500 Somei Yoshino
https://weathernews.jp/s/sakura/spot/162/https://www.google.com/maps?q=36.3271,138.4176https://www.komoro-tour.jp/https://www.komoro-tour.jp/wp/wp-content/uploads/2022/03/74af978c4a46a...This site has three digits in the URL (/spot/???/), better (more recommendable) than four digits in the above two. They will hold Sakura Festival until Apr 24.
4/17-4/23 8:15 Tsutsujigaoke@Sendai
350 Shidarezakura+
https://weathernews.jp/s/sakura/spot/55/https://www.google.com/maps?q=38.2601,140.8967http://ohanami-sendai.net/This site is a two-digit one, but they have canceled their Sakura Festival in 2022.
4/17-4/27 8:25 Unjoden@Nagano
650 Somei Yoshino
https://weathernews.jp/s/sakura/spot/4806/https://www.google.com/maps?q=36.6704,138.1889https://unjouden.zenkoji.jp/https://www.zenkoji.jp/en/If you are interested in Zenkoji, one of the famous temples in Japan, do not forget to drop by Unjoden for a Sakura viewing.
4/23-4/28 8:29 Shizumine@Ibaraki
2000 Yaezakura
https://weathernews.jp/s/sakura/spot/4001/https://www.google.com/maps?q=36.5005,140.4178113http://www.naka-kanko.jp/data/doc/1648193541_doc_23_0.pdfThis site is a four-digit one, but they will hold Yaezakura Festival until Apr 26, 2022.
4/21-4/29 8:39 Iiyama
120 SomeiYoshino+
https://weathernews.jp/s/sakura/spot/173/https://www.google.com/maps?q=36.8564,138.3656https://www.iiyamacci.jp/%E3%82%A4%E3%83%99%E3%83%B3%E3%83%88%E6%83%85...The timing for viewing the blooming peak looks one of the best, but they have canceled Sakura Festival.
4/14-4/23 8:49 Garyu@Suzaka
600 Somei Yoshino
https://weathernews.jp/s/sakura/spot/4803/https://www.google.com/maps?q=36.6432,138.3142https://www.suzaka.jp/pdf/data/event2022-34.pdfThey will hold their Sakura Festival until Apr 24. This site is one hour from Zenkoji Temple in Nagano.
4/21-4/28 8:50 Matsugasaki@Yonezawa
200 Somei Yoshino
https://weathernews.jp/s/sakura/spot/64/https://www.google.com/maps?q=37.9100,140.1040http://www.yira-yonezawa.org/sightseeing/en/nature.htmlThis site is a two-digit one.
4/17-4/23 8:52 Iimoriyama@Aizu
1 Edo Higan
https://weathernews.jp/s/sakura/spot/3608/https://www.google.com/maps?q=37.5049,139.95274/22-4/29 8:58 Eboshiyama@Nanyo
1000 Edohigan+
https://weathernews.jp/s/sakura/spot/63/https://www.google.com/maps?q=38.0510,140.1654http://nanyoshi-kanko.jp/topics/%e8%b5%a4%e6%b9%af%e6%b8%a9%e6%b3%89%e...Akayu Onsen Sakura Festival here will be on until May 5 in 2022.
4/19-4/25 9:01 Natsui@Ono
1000 Somei Yoshino
https://weathernews.jp/s/sakura/spot/3607/https://www.google.com/maps?q=37.2535,140.6572113https://www.youtube.com/watch?v=sHJ0N4J8AtY4/17-4/22 9:01 Ishibe@Aizu
10 Edo Higan
https://weathernews.jp/s/sakura/spot/3611/https://www.google.com/maps?q=37.5101,139.95434/18-4/26 9:04 Tsurugajo@Aizu
1000 Somei Yoshino
https://weathernews.jp/s/sakura/spot/70/https://www.google.com/maps?q=37.4870,139.9301https://www.tsurugajo.com/2022/04/11/21791/For Aizu-Wakamatsu, they list Iimoriyama, Ishibe, and this Tsugajo Castle for Apr 22, 2022.
There are many Sakura sites for Apr 22, but the earliest arrival times are later than 9:04, and I skipped showing them.
I also think of more closer sites such as the below
Nokogiriyama
Tukubasan
Choshi
Kujyukuri
Katuura
Tateyama
Umihotaru
Enoshima/Kamakura
Tamako
Tanzawa
Kawagoe