tidealmanac
Thu, Sep 17

Friday, September 18, 2026

Big Spanish Key, FL · NOAA 8724246 · MLLW · Local time (America/New_York)

Sat, Sep 19

This is a subordinate station: NOAA predicts its highs and lows from a nearby reference station and publishes no curve for it. Nothing is interpolated.

Tides

  1. Low12:06 AM1.5 ft0.47 m
  2. High6:01 AM3.9 ft1.19 m
  3. Low2:44 PM0.9 ft0.27 m
  4. High8:20 PM2.3 ft0.69 m

Range 3.0 ft0.92 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:50 AM
Sunrise
7:13 AM
Solar noon
1:20 PM
Sunset
7:27 PM
Civil dusk
7:50 PM
Daylight
12h 15m

Computed from the station's coordinates (NOAA solar algorithm, ±1 min); not NOAA tide data. Sun calendars: sunupsundown.site.

Moon

First quarter44% illuminated · day 6 of the cycle

Near quarter moon: neap tides, a smaller range than average. Approximate phase, computed here.

This week

Tue, Sep 15H 3:58AM 4.3 ft1.31 mL 11:39AM 0.5 ft0.17 mH 4:59PM 3.1 ft0.94 mL 11:09PM 1.3 ft0.40 mWed, Sep 16H 4:33AM 4.2 ft1.28 mL 12:32PM 0.7 ft0.20 mH 5:44PM 2.7 ft0.83 mL 11:38PM 1.4 ft0.43 mThu, Sep 17H 5:13AM 4.1 ft1.24 mL 1:33PM 0.8 ft0.24 mH 6:42PM 2.4 ft0.74 mFri, Sep 18L 12:06AM 1.5 ft0.47 mH 6:01AM 3.9 ft1.19 mL 2:44PM 0.9 ft0.27 mH 8:20PM 2.3 ft0.69 mSat, Sep 19L 12:41AM 1.7 ft0.51 mH 7:02AM 3.8 ft1.15 mL 4:00PM 0.9 ft0.29 mH 10:52PM 2.4 ft0.72 mSun, Sep 20L 2:22AM 1.8 ft0.54 mH 8:20AM 3.8 ft1.14 mL 5:08PM 1.0 ft0.29 mH 11:25PM 2.6 ft0.78 mMon, Sep 21L 4:01AM 1.8 ft0.54 mH 9:37AM 3.9 ft1.18 mL 6:01PM 0.9 ft0.29 mH 11:44PM 2.8 ft0.85 m