Yankee Time Zone — Y
Military letter Y (Yankee) maps to the UTC-12 offset from Coordinated Universal Time. A theoretical zone west of the International Date Line.
Yankee (Y) — UTC-12
03:40:54
Thursday, 22 October 2026 GMT-12
About Yankee
UTC offset
UTC-12
Letter Y = Yankee in the NATO phonetic alphabet.
Where Y is used
A theoretical zone west of the International Date Line.
Converting Y time
In a military date-time group the zone letter follows the time: 151430Y JAN 26 means 14:30 Yankee time on 15 January 2026, which is 160230Z JAN 26 in Zulu (UTC).
| Zone | Offset | When it's 12:00 Y |
|---|---|---|
| U Uniform | UTC-8 | 16:00 |
| S Sierra | UTC-6 | 18:00 |
| R Romeo | UTC-5 | 19:00 |
| Z Zulu | UTC | 00:00 (+1 day) |
| A Alpha | UTC+1 | 01:00 (+1 day) |
| B Bravo | UTC+2 | 02:00 (+1 day) |
| C Charlie | UTC+3 | 03:00 (+1 day) |
| E Echo | UTC+5 | 05:00 (+1 day) |
| H Hotel | UTC+8 | 08:00 (+1 day) |
| I India | UTC+9 | 09:00 (+1 day) |
| K Kilo | UTC+10 | 10:00 (+1 day) |
Other military letters
A Alpha UTC+1 B Bravo UTC+2 C Charlie UTC+3 D Delta UTC+4 E Echo UTC+5 F Foxtrot UTC+6 G Golf UTC+7 H Hotel UTC+8 I India UTC+9 K Kilo UTC+10 L Lima UTC+11 M Mike UTC+12 N November UTC-1 O Oscar UTC-2 P Papa UTC-3 Q Quebec UTC-4 R Romeo UTC-5 S Sierra UTC-6 T Tango UTC-7 U Uniform UTC-8 V Victor UTC-9 W Whiskey UTC-10 X X-ray UTC-11 Z Zulu UTC