The Kamen Rider series will celebrate its 50th anniversary on April 3. Three timers appeared on the official Kamen Rider WEB site for Project 1, Project 2, and Project 3.
A new Twitter account also appeared for the 50th anniversary, along with the hashtag #kamenrider50th:
for 4.3 (sat)
— 【公式】仮面ライダー生誕50周年企画 (@KamenRider50th) March 28, 2021
All of the timers indicate around 140 hours* remaining, which is on April 3 in Japan.
* The hours may be different by the time this is posted.
Article Sources Dengeki