Service unavailable at 13:50 CEST

Every other day (10/9, 8/9, 6/9, etc.), my script that uploads my live status has failed to do so at 13:50 CEST (UTC+2h). The error returned is:

<html><body><h1>503 Service Unavailable</h1>No server is available to handle this request.</body></html>

Is there some server maintenance being do at that precise time? Can it be avoided?

System id 46706.

There are some daily maintenance jobs which start at this time. Which API service are you trying to access at this time, since Add Status shouldn’t be affected.

It’s only the add status API. But I set extended parameters and have the X-Rate-Limit header set.