Well sir in our county UK its working fine and very successful so far. I'm happy since its introduced no more confusion like gurburab & nagar kirtans, everything under schedule. All the gurdwaras committees following same step together.
apne edar ta sayed sahi work nai kar riha sade pind 3 gurdware aah :-/ ik ch nanaksahi calandhar wali sangrandh manodeh bakia ch purani date de hisab nall
inj hi gurpurab di war nu karde galat ho giya kam , anandpur sahib v hun sangat 13 & 14 april dowe din jandi sangat v confuse ho jandi vaishki 13 di aa 14 di
the significance of nanakshahi celender is that it gives sikhishm its own sikh calender as sikhs consider themselves under identity crisis ( all other religions have thr own )
2ndly some gurpurabs occur twice a year so it fixes that too
100 years down from now nanakshai may play a big role in defining sikhs as independent religion
visakhi typcally shld be celebrated on the first day of visakh month on wchever day it occurs
coz hukamana from patshahi 10 was to gather on pehli of visakh
IMO
changing dates not gonna change anyones' spritual level ..so sikhs shld work more on dharam parchaar than anything else