ICE utilizes industry-standard time synchronization systems that rely on atomic time sources to maintain accuracy. On June 30th of this year, a leap second will be added after 23:59:59 GMT. A leap second is a second which is added to Coordinated Universal Time (UTC)/Greenwich Mean Time (GMT), in order to synchronize atomic clocks with astronomical time to keep clocks as accurate as possible. This means that on the evening of June 30th, 2015 clocks will advance in the following manner - 23:59:59, 23:59:60, 00:00:00.
ICE is confident that this will not cause any issues on our systems; however, we cannot guarantee the same for all systems used by our participants, market data vendors, and other third-parties. As a result, ICE has made the decision to delay all market state transitions which would normally occur between June 30th 23:00 GMT and July 1st 00:01 GMT. These markets will instead transition according to the schedule below:
| Standard Market Transition Times | June 30th/July 1st Adjusted Market Transition Times | ||||||||
| GMT | ET | GMT | ET | ||||||
| Exchange | Market | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open |
| ICE Futures U.S. | Sugar 11 | 00:00 | 07:30 | 20:00 | 03:30 | 00:05 | 07:30 | 20:05 | 03:30 |
| Coffee C | 00:00 | 08:15 | 20:00 | 04:15 | 00:05 | 08:15 | 20:05 | 04:15 | |
| Cocoa | 00:00 | 08:45 | 20:00 | 04:45 | 00:05 | 08:45 | 20:05 | 04:45 | |
| Cotton No 2 | 23:30 | 01:00 | 19:30 | 21:00 | 00:05 | 01:00 | 20:05 | 21:00 | |
| FCOJ A | 00:00 | 12:00 | 20:00 | 08:00 | 00:05 | 12:00 | 20:05 | 08:00 | |
| Metals | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Equity Indices | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| U.S. Dollar Index | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| FX | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Corn | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Soybean | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Wheat | 23:30 | 00:00 | 19:30 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| ICE Futures U.S. - Energy Division |
Canadian Fin Gas | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 |
| Fin Gas | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin Power | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Henry | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Physical Environmental | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Financial Environmental | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Standard Market Transition Times | June 30th/July 1st Adjusted Market Transition Times | ||||||||
| GMT | ET | GMT | ET | ||||||
| Exchange | Market | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open |
| ICE Futures Europe | Eurodollar | 23:30 | 23:45 | 19:30 | 19:45 | 00:05 | 00:10 | 20:05 | 20:10 |
| GCF Repo | 23:30 | 23:45 | 19:30 | 19:45 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Ferrous Metals | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin LNG | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin Monomores | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin NGL | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin Olefins | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Oil | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Freight | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Euribor | 23:45 | 00:00 | 19:45 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| MSCI Europe NTR Index Futures | 23:45 | 00:00 | 19:45 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| MSCI World NTR Index Futures | 23:45 | 00:00 | 19:45 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Brent | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Brent NX/WTI Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Brent/MEC Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Brent/WTI Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| BrentNX/Brent Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| CFR South China Coal Futures | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| FOB Indo sub-bit Coal Futures | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Gasoil | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| gC Newcastle Coal | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| gC Newcastle/FOB Indo sub-bit Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| GO Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Heating Oil | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Heating Oil/Brent Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Heating Oil/Brent NX Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Heating Oil/LS GO Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| HO/WTI Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| LS GO/Brent Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Middle East Crude | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB/Brent Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB/Brent NX Crack | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB/HO Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB/LS GO Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| RBOB/WTI | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| US Coal | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| WTI | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| WTI/MEC Spread | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Standard Market Transition Times | June 30th/July 1st Adjusted Market Transition Times | ||||||||
| GMT | ET | GMT | ET | ||||||
| Exchange | Market | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open | Pre-Open | Open |
| ICE Futures Singapore | |||||||||
| Mini Brent Futures | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Kilo Gold Futures | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Renminbi Futures | 23:55 | 00:00 | 19:55 | 20:00 | 00:05 | 00:10 | 20:05 | 20:10 | |
| ICE Swap Trade | |||||||||
| Fin Gas | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Fin Power | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |
| Oil | 23:40 | 23:50 | 19:40 | 19:50 | 00:05 | 00:10 | 20:05 | 20:10 | |