SNTP Time Source

# Example configuration entry
time:
  - platform: sntp
    id: sntp_time
    timezone: Europe/Sofia
    servers:
     - 0.pool.ntp.org
     - 1.pool.ntp.org
     - 2.pool.ntp.org

Configuration variables

• servers (Optional, list of strings): Choose up to 3 NTP servers that are used for the clock source. Defaults to 0.pool.ntp.org, 1.pool.ntp.org and 2.pool.ntp.org

For the ESP32:

• smooth_sync (Optional, boolean): When true, updates time smoothly by gradually reducing time error. If the difference between the SNTP response time and system time is more than 35 minutes, update system time immediately. Defaults to false, which updates system time immediately upon receiving a response from the SNTP server.

• All other options from Base Time Configuration.

ℹ️ Note

If your are using Manual IPs make sure to configure a DNS Server (dns1, dns2) or use only IP addresses for the NTP servers.

⚠️ Warning

Due to limitations of the SNTP implementation, on platforms other than ESP8266 and ESP32 this component will trigger on_time_sync only once when it detects that the system clock has been set, even if the update was not done by the SNTP implementation! This must be taken into consideration when SNTP is used together with other real time components, where another time source could update the time before SNTP synchronizes.

See Also