Chittagong · Bangladesh · 22.34° N · 91.83° E
Solar position in Chattogram
Sun position, daylight and the best solar panel angle for Chattogram — computed for 22.34° N, 91.83° E, 15 m above sea level.
The sun right now
Sun in Chattogram today
Saturday, 24 October 2026 · local time UTC+6
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:37 | sun 18° below horizon |
| Nautical dawn | 05:03 | 12° below |
| Civil dawn | 05:29 | 6° below |
| Sunrise | 05:52 | 102° ESE |
| Golden hour ends | 06:23 | sun 6° up |
| Solar noon | 11:36 | 55.9° high |
| Golden hour starts | 16:50 | sun 6° up |
| Sunset | 17:20 | 258° WSW |
| Civil dusk | 17:43 | 6° below |
| Nautical dusk | 18:09 | 12° below |
| Astronomical dusk | 18:35 | 18° below |
| Day length | 11 h 28 min | |
Sun path diagram for Chattogram
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 88.9° at solar noon in Chattogram; on the December solstice only 44.2°. Sunrise swings from 64° ENE in June to 115° ESE in December — a 51° arc along the horizon.
Sunrise, sunset and sun height by month
Values for the 21st of each month, local clock time including daylight saving time.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 06:34 | 12:04 | 17:33 | 10 h 59 min | 47.8° |
| February | 06:20 | 12:06 | 17:52 | 11 h 32 min | 57.1° |
| March | 05:56 | 11:59 | 18:03 | 12 h 08 min | 67.9° |
| April | 05:28 | 11:51 | 18:15 | 12 h 47 min | 79.5° |
| May | 05:10 | 11:49 | 18:28 | 13 h 17 min | 87.9° |
| June | 05:09 | 11:54 | 18:39 | 13 h 30 min | 88.9° |
| July | 05:19 | 11:59 | 18:38 | 13 h 18 min | 88.1° |
| August | 05:31 | 11:55 | 18:19 | 12 h 48 min | 79.8° |
| September | 05:41 | 11:45 | 17:50 | 12 h 09 min | 68.4° |
| October | 05:51 | 11:37 | 17:23 | 11 h 32 min | 57.0° |
| November | 06:08 | 11:38 | 17:08 | 10 h 59 min | 47.8° |
| December | 06:27 | 11:50 | 17:13 | 10 h 46 min | 44.2° |
A year of daylight in Chattogram
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Chattogram
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
26°collects the most energy over a year: 1543 kWh per kWp.
3°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | June kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1418 | 92% | 3.57 | 1.4× |
| 3° off-grid best | 1445 | 94% | 3.56 | 1.3× |
| 15° | 1521 | 99% | 3.44 | 1.4× |
| 22° = latitude | 1540 | 100% | 3.32 | 1.5× |
| 26° year-round best | 1543 | 100% | 3.23 | 1.6× |
| 30° | 1540 | 100% | 3.14 | 1.7× |
| 45° | 1473 | 95% | 2.69 | 1.9× |
| 60° | 1327 | 86% | 2.13 | 2.4× |
| 70° | 1190 | 77% | 1.73 | 2.8× |
| 90° | 858 | 56% | 1.15 | 3.5× |
A fixed array in Chattogram produces the most over a year at 26°. The design month for an off-grid system is June: at 3° it makes 3.56 kWh per kWp a day, 10% more than at 26°, and costs 6% of the yearly total. Why steep panels win winter.
Off-grid solar in Chattogram at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 26° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 26° | Mean temp. |
|---|---|---|---|---|---|
| January | 4.50 | 5.74 | 4.83 | 4.84 | 18.6 °C |
| February | 5.28 | 5.48 | 4.56 | 5.15 | 21.6 °C |
| March | 5.80 | 4.55 | 3.72 | 4.98 | 25.6 °C |
| April | 5.94 | 3.48 | 2.80 | 4.58 | 27.9 °C |
| May | 5.49 | 2.67 | 2.13 | 3.98 | 28.4 °C |
| June | 4.55 | 2.19 | 1.73 | 3.23 | 28.0 °C |
| July | 4.48 | 2.31 | 1.84 | 3.24 | 27.5 °C |
| August | 4.66 | 2.71 | 2.17 | 3.50 | 27.4 °C |
| September | 4.67 | 3.25 | 2.63 | 3.74 | 27.4 °C |
| October | 4.64 | 4.18 | 3.41 | 4.16 | 26.6 °C |
| November | 4.61 | 5.57 | 4.60 | 4.76 | 23.5 °C |
| December | 4.22 | 5.71 | 4.78 | 4.64 | 19.9 °C |
| Year | 4.90 avg | 3.98 avg | 1190 kWh | 1543 kWh |
Sizing example. To run a 1 kWh-per-day load through June on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 680 Wp of panels at 70°, versus 360 Wp at 26°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Chattogram
Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.
2.8 mrow pitch at 70°
2.8 mrow pitch at 26°
How Chattogram compares in Bangladesh
Against the other 132 places in Bangladesh with climate data, for a fixed array at its best angle.
3rdof 133 places in Bangladesh for sunshine, shared: 4.90 peak sun hours a day on flat ground.
+8%solar energy a year compared with the average place in Bangladesh: 1,543 against 1,428 kWh per kWp.
−6 mindaylight on the longest day, compared with Dhaka: 13 h 30 min against 13 h 36 min.
26°best year-round tilt here; across Bangladesh it runs from 23° in Taluker Char Doani to 28° in Sylhet.
Of the 133 places in Bangladesh, Hāthazāri and one other place get the most sun (4.91 peak sun hours a day) and Panchagarh the least (4.36); Chattogram ranks joint 3rd. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.73 kWh a day here, against 1.76 kWh on average in Bangladesh. The shortest day lasts 10 h 46 min, +6 min compared with Dhaka.
Solar forecast for Chattogram, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Chattogram
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Places near Chattogram
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A free, live card for Chattogram: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.