i'm not doing any solo with that hash but according to the calculator around one week with 4 peta and two weeks with 2 peta
this one week and two weeks with bad luck can be easily extended to 1 month or more, better to solo only if you can find a block per day, to reduce variance, which require a bit less than 30 peta
this is just a forecast calculated at this difficulty, with your hashing power.
this is just statistic, really realistic if you are in a pool...
but unrealistic if you do SOLO MINING.
Here, the weight of the luck component, would be too high...