If I have CQ today and reserve days starting tomorrow does the same 3 pm schedule check apply as with an off day or am I contactable all day today since I'm technically not off?

Thanks

Edit: just saw in when scheduling calls that the required schedule check is not required on a day you perform training. I assume the , if scheduling were to call me this afternoon or evening for a trip tomorrow there's no obligation to acknowledge it and start the 12 hour clock until midnight.