Uptime Percentage is Incorrect even there is no downtime time recorded in the monitoring

[sriramsundarsm]

📑 I have found these related issues/pull requests

I have enabled monitoring for my private endpoint where i do not find any downtime event for last 30 days though its showing the uptime percentage as 99.92%. Need a help on this.

🛡️ Security Policy

• I agree to have read this project Security Policy

Description

No response

👟 Reproduction steps

Created one url montoring.
Successful ping response im getting.
no downtime at all for last 30 days.
after days the uptime says. its 99.92% without any downtime alerts

👀 Expected behavior

Other services also im facing the same issue in example i could see 4 minutes of downtime details for last 30 days but the uptime 99.87%. How 4 minutes can reduce this month even manual math also not matching this figures.

😓 Actual Behavior

Uptime percentage is incorrect.
without downtime its not reaching 100%.
with downtime its reduced much than actual 99.87%

🐻 Uptime-Kuma Version

Version: 1.23.15

💻 Operating System and Arch

Ubuntu 24.04 LTS

🌐 Browser

131.0.6778.86

🖥️ Deployment Environment

• Runtime: Default
• Database: Default
• Filesystem used to store the database on: Default
• number of monitors: 113

📝 Relevant log output

I have followed default setting of installation on EC2.