Inexact Date Codes
These codes are used primarily when exact dates cannot be obtained. Banders should rarely need to use them.
Month Inexact Codes |
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| CODE | DESCRIPTION | EXAMPLE |
82 |
Summer (06/21/YY thru 09/21/YY) |
82/99/YY |
83 |
Spring (03/20/YY thru 06/20/YY) |
83/99/YY |
92 |
Winter (12/21/YY-1 thru 03/19/YY) |
92/99/YY |
93 |
Fall (09/22/YY thru 12/20/YY) |
93/99/YY |
94 |
Hunting Season (09/01/YY thru 03/31/YY+1) |
94/99/YY |
99 |
Unknown month of encounter |
99/99/YY |
00 |
Unknown month of banding |
00/99/YY |
Day Inexact Codes |
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| CODE | DESCRIPTION | EXAMPLE |
41 |
1st ten days in month |
MM/41/Year |
42 |
2nd ten days in month |
MM/42/Year |
43 |
3rd ten days in month |
MM/43/Year |
45 |
encountered during special hunting seasons |
MM/45/Year |
51-81* |
Encounter letter date or postmark date (plus 50) |
** |
99 |
Unknown day of encounter |
MM/99/Year |
00 |
Unknown day of banding |
MM/99/Year |
* 50 is added to the postmark date or the date the encounter letter is received or processed at the BBL because no encounter date was provided or the reporter stated they did not know when the bird was encountered.
** For example, the date code 12/65/1970 indicates a letter from the finder had a postmark of 12/15/1970 but they did not include an encounter date.
