Is an alternate adequate if it's closed after 23:00 but ATS on request is available outside operational hours? For example If I do a go around at 03:00 and divert, are they gonna be ready (FT 00:44 to alternate).I don't think so
The OMA says : "Suitable instrument approach procedures, Air Traffic Services, sufficient lighting, communications, weather reporting and navigation aids are available"
In this case they are available, but...on request.