Karachi is 10 hours ahead of Houston. Houston is UTC-5. Karachi is UTC+5.
Houston on 15 October 2026: sunrise 07:23, sunset 18:50, day length 11 h 27 min.
Karachi on 15 October 2026: sunrise 06:29, sunset 18:05, day length 11 h 35 min.
For Houston and Karachi: The next clock change in Houston is 1 hour back on 1 November 2026 at 02:00, from UTC-5 to UTC-6.
For Karachi and Houston: Karachi has no clock change scheduled in the next year. The last year with a seasonal offset change was 2009. The offset now is UTC+5.
| Change |
|---|
| The gap changes on 1 November 2026 at 02:00, when clocks in Houston move back 1 hour. |
| The gap changes on 14 March 2027 at 02:00, when clocks in Houston move forward 1 hour. |
| The gap changes on 7 November 2027 at 02:00, when clocks in Houston move back 1 hour. |
| View | 09:00 to 17:00 |
|---|---|
| From Houston | Houston and Karachi have no hour that is 09:00 to 17:00 in both cities. |
| From Karachi | Karachi and Houston have no hour that is 09:00 to 17:00 in both cities. |
| Houston | Karachi |
|---|---|
| 00:00 | 10:00 |
| 01:00 | 11:00 |
| 02:00 | 12:00 |
| 03:00 | 13:00 |
| 04:00 | 14:00 |
| 05:00 | 15:00 |
| 06:00 | 16:00 |
| 07:00 | 17:00 |
| 08:00 | 18:00 |
| 09:00 | 19:00 |
| 10:00 | 20:00 |
| 11:00 | 21:00 |
| 12:00 | 22:00 |
| 13:00 | 23:00 |
| 14:00 | 00:00 (next day) |
| 15:00 | 01:00 (next day) |
| 16:00 | 02:00 (next day) |
| 17:00 | 03:00 (next day) |
| 18:00 | 04:00 (next day) |
| 19:00 | 05:00 (next day) |
| 20:00 | 06:00 (next day) |
| 21:00 | 07:00 (next day) |
| 22:00 | 08:00 (next day) |
| 23:00 | 09:00 (next day) |
| City | Longest day | Shortest day |
|---|---|---|
| Houston with Karachi | 21 June 2026, 14 h 4 min | 21 December 2026, 10 h 14 min |
| Karachi with Houston | 21 June 2026, 13 h 41 min | 22 December 2026, 10 h 36 min |
| City | Date | Holiday |
|---|---|---|
| Houston and Karachi | 11 November 2026 | Veterans Day |
| Houston and Karachi | 26 November 2026 | Thanksgiving Day |
| Karachi and Houston | 9 November 2026 | Iqbal Day (یومِ اقبال) |
| Karachi and Houston | 25 December 2026 | Quaid-e-Azam Day / Christmas (یومِ قائدِ اعظم) |