| ARBI |
Arbitrary |
| ADST |
Atlantic Daylight Standard Time |
| AST |
Atlantic Standard Time, Z+4 |
| CGVD28 |
Canadian Geodetic Vertical Datum 1928 adjustment |
| CD2000 |
Chart Datum 2000 |
| CD |
Chart Datum |
| CDST |
Central Daylight Standard Time |
| CST |
Central Standard Time, Z+6 |
| DPWD |
Department of Public Works |
| EDST |
Eastern Daylight Standard Time |
| EST |
Eastern Standard Time, Z+5 |
| GEOD |
Geodetic Survey of Canada |
| GSC |
Geodetic Survey of Canada |
| GST |
Greenland Standard Time |
| GMT |
Greewich Mean Time |
| IGLD55 |
International Great Lakes Datum 1955 |
| IGLD85 |
International Great Lakes Datum 1985 |
| MDST |
Mountain Daylight Standard Time |
| MST |
Mountain Standard Time, Z+7 |
| NDST |
Newfoundland Daylight Standard Time |
| NST |
Newfoundland Standard Time, Z+3 1/2 |
| PDST |
Pacific Daylight Standard Time |
| PN |
Permanent Non-Operating |
| PO |
Permanent Operating |
| PST |
Pacific Standard Time, Z+8 |
| TN |
Temporary Non-Operating |
| TO |
Temporary Operating |
| UTC |
Universal Time Co-ordinated |
| SNDG |
Sounding Datum |
| UNKN |
Unknown |
| USLS1903 |
United States Lake Survey 903 adjustment |
