Acccord to the CDC in August, 1961 there were 1460 births in Hawaii.
Table 2.2
https://www.cdc.gov/nchs/data/vsus/vsus_1961_1.pdf
Between the Ah’Nee certificate (09945) and the Sunahara certificate (11080) there are 1135 births. Since there were 1460 births in August, 1961 the range of known births fits.