Calabarzon · Philippines · 14.54° N · 121.36° E
Solar position in Sampaloc
Sun position, daylight and the best solar panel angle for Sampaloc — computed for 14.54° N, 121.36° E, 390 m above sea level.
The sun right now
Sun in Sampaloc today
Sunday, 25 October 2026 · local time UTC+8
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 04:35 | sun 18° below horizon |
| Nautical dawn | 05:00 | 12° below |
| Civil dawn | 05:26 | 6° below |
| Sunrise | 05:47 | 102° ESE |
| Golden hour ends | 06:16 | sun 6° up |
| Solar noon | 11:38 | 63.4° high |
| Golden hour starts | 17:00 | sun 6° up |
| Sunset | 17:29 | 258° WSW |
| Civil dusk | 17:51 | 6° below |
| Nautical dusk | 18:16 | 12° below |
| Astronomical dusk | 18:41 | 18° below |
| Day length | 11 h 42 min | |
Sun path diagram for Sampaloc
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 81.1° at solar noon in Sampaloc; on the December solstice only 52.0°. Sunrise swings from 65° ENE in June to 114° ESE in December — a 49° 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 | 06:23 | 12:05 | 17:47 | 11 h 24 min | 55.6° |
| February | 06:15 | 12:08 | 18:00 | 11 h 45 min | 64.9° |
| March | 05:58 | 12:01 | 18:05 | 12 h 07 min | 75.7° |
| April | 05:37 | 11:53 | 18:09 | 12 h 32 min | 87.3° |
| May | 05:25 | 11:51 | 18:16 | 12 h 51 min | 84.4° |
| June | 05:26 | 11:56 | 18:25 | 12 h 59 min | 81.1° |
| July | 05:35 | 12:01 | 18:26 | 12 h 52 min | 84.1° |
| August | 05:41 | 11:57 | 18:13 | 12 h 32 min | 87.6° |
| September | 05:43 | 11:47 | 17:51 | 12 h 08 min | 76.2° |
| October | 05:46 | 11:39 | 17:31 | 11 h 44 min | 64.8° |
| November | 05:58 | 11:40 | 17:22 | 11 h 24 min | 55.6° |
| December | 06:14 | 11:52 | 17:30 | 11 h 16 min | 52.0° |
A year of daylight in Sampaloc
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 Sampaloc
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
12°collects the most energy over a year: 1384 kWh per kWp.
25°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 | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1359 | 98% | 2.69 | 1.8× |
| 12° year-round best | 1384 | 100% | 3.00 | 1.6× |
| 15° = latitude | 1382 | 100% | 3.07 | 1.6× |
| 25° off-grid best | 1356 | 98% | 3.22 | 1.4× |
| 30° | 1331 | 96% | 3.27 | 1.4× |
| 45° | 1207 | 87% | 3.28 | 1.6× |
| 60° | 1022 | 74% | 3.11 | 1.9× |
| 70° | 873 | 63% | 2.90 | 2.3× |
| 90° | 592 | 43% | 2.27 | 2.4× |
A fixed array in Sampaloc produces the most over a year at 12°. The design month for an off-grid system is December: at 25° it makes 3.22 kWh per kWp a day, 7% more than at 12°, and costs 2% of the yearly total. Why steep panels win winter.
Off-grid solar in Sampaloc at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 12° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 12° | Mean temp. |
|---|---|---|---|---|---|
| January | 3.85 | 3.87 | 3.18 | 3.38 | 24.6 °C |
| February | 4.64 | 3.99 | 3.27 | 3.97 | 24.9 °C |
| March | 5.41 | 3.63 | 2.96 | 4.45 | 26.0 °C |
| April | 6.16 | 2.83 | 2.27 | 4.81 | 27.7 °C |
| May | 5.75 | 2.04 | 1.61 | 4.34 | 28.5 °C |
| June | 5.27 | 1.82 | 1.43 | 3.93 | 27.9 °C |
| July | 4.72 | 1.85 | 1.46 | 3.56 | 27.2 °C |
| August | 4.44 | 2.16 | 1.72 | 3.43 | 27.1 °C |
| September | 4.66 | 2.84 | 2.28 | 3.73 | 27.1 °C |
| October | 4.28 | 3.30 | 2.68 | 3.55 | 26.8 °C |
| November | 3.91 | 3.72 | 3.03 | 3.37 | 26.3 °C |
| December | 3.43 | 3.55 | 2.90 | 3.00 | 25.4 °C |
| Year | 4.71 avg | 2.96 avg | 873 kWh | 1384 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 820 Wp of panels at 70°, versus 390 Wp at 12°. Here the lower tilt is the better winter choice — the sun stays high enough. Size your own system.
Row spacing in Sampaloc
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.
2.3 mrow pitch at 70°
2.3 mrow pitch at 12°
How Sampaloc compares in the Philippines
Against the other 519 places in the Philippines with climate data, for a fixed array at its best angle.
518thof 520 places in the Philippines for sunshine: 4.71 peak sun hours a day on flat ground.
−6%solar energy a year compared with the average place in the Philippines: 1,384 against 1,467 kWh per kWp.
±0 mindaylight on the longest day, compared with Quezon City: 12 h 59 min against 13 h 00 min.
12°best year-round tilt here; across the Philippines it runs from 4° in Bongao to 18° in Vigan.
Of the 520 places in the Philippines, Jolo gets the most sun (5.36 peak sun hours a day) and Pangil the least (4.68); Sampaloc ranks 518th. In its darkest month, June, 1 kWp of off-grid panels at 70° makes 1.43 kWh a day here, against 1.34 kWh on average in the Philippines. The shortest day lasts 11 h 16 min, ±0 min compared with Quezon City.
Solar forecast for Sampaloc, 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 Sampaloc
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A free, live card for Sampaloc: 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.