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Date format (CCYY/MM/DD)
All dates are entered as a four-digit year, month and day separated by slashes, e.g. 2020/01/01.
Every date field in the ODAG record layouts is submitted in CCYY/MM/DD format, with 2020/01/01 as the example. Date fields have a length of 10 characters.
Sources: ODAG protocol, Universe Table 1, Column H, PDF p. 18; CDAG protocol, Universe Table 1, Column J, p. 18; FA protocol, record layouts (e.g., Table 1/2 Col D Date of Birth), PDF p. 10; SNPCC protocol, Universe Table 1 SNPE, Column ID G and all date fields (PDF pp. 10-21); CPE protocol, COA Columns G and H, p. 14.