# Why would there be a NOTAM for an airport rotating beacon being on continuously?

This NOTAM currently exists at Riverside airport:

!RVS 01/014 RVS AD AP ABN ON CONS 2001141700-2001291700


The rotating beacon is on continuously per this NOTAM. It has nothing to do with the weather.

Why would an airport do this other than in IFR conditions during the daytime?