tidealmanac
Sat, Sep 19

Sunday, September 20, 2026

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

Mon, Sep 21

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. Low2:22 AM1.8 ft0.54 m
  2. High8:20 AM3.8 ft1.14 m
  3. Low5:08 PM1.0 ft0.29 m
  4. High11:25 PM2.6 ft0.78 m

Range 2.8 ft0.85 m · 4 predicted tides · MLLW

Sun

Civil dawn
6:51 AM
Sunrise
7:13 AM
Solar noon
1:19 PM
Sunset
7:25 PM
Civil dusk
7:48 PM
Daylight
12h 12m

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

Moon

First quarter65% illuminated · day 8 of the cycle

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

This week

Thu, 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 mTue, Sep 22L 5:11AM 1.7 ft0.51 mH 10:40AM 4.0 ft1.23 mL 6:41PM 0.9 ft0.29 mWed, Sep 23H 12:05AM 3.1 ft0.93 mL 6:06AM 1.5 ft0.46 mH 11:33AM 4.2 ft1.29 mL 7:13PM 1.0 ft0.29 m