Constant esp_idf_sys::sntp_sync_mode_t_SNTP_SYNC_MODE_SMOOTH

pub const sntp_sync_mode_t_SNTP_SYNC_MODE_SMOOTH: sntp_sync_mode_t = 1;

< Smooth time updating. Time error is gradually reduced using adjtime function. If the difference between SNTP response time and system time is large (more than 35 minutes) then update immediately.