Tide Clock

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="256"
        x2="256"
        y1="406"
        y2="61"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#addcff" />
        <stop offset=".503" stop-color="#eaf6ff" />
        <stop offset="1" stop-color="#eaf6ff" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="256"
        x2="256"
        y1="496"
        y2="16"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#5558ff" />
        <stop offset="1" stop-color="#00c0ff" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M256 151h30c16.816 0 30-13.184 30-30s-13.184-30-30-30c0-16.816-13.184-30-30-30s-30 13.184-30 30v30c0 16.816 13.184 30 30 30zm241 105c-8.291 0-15 6.709-15 15 0 8.276-6.738 15-15 15h-61c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15h-60c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15h-60c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15H45c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15v90c0 24.814 20.186 45 45 45h61c11.514 0 22.031-4.351 30-11.484C143.969 401.65 154.486 406 166 406h60c11.514 0 22.031-4.351 30-11.484C263.969 401.65 274.486 406 286 406h60c11.514 0 22.031-4.351 30-11.484C383.969 401.65 394.486 406 406 406h61c24.814 0 45-20.186 45-45v-90c0-8.291-6.709-15-15-15z"
    />
    <path
        fill="url(#b)"
        d="M497 346c-8.291 0-15 6.709-15 15 0 8.276-6.738 15-15 15h-61c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15h-60c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15h-60c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15c0 8.276-6.738 15-15 15H45c-8.262 0-15-6.724-15-15 0-8.291-6.709-15-15-15s-15 6.709-15 15v120c0 8.291 6.709 15 15 15h482c8.291 0 15-6.709 15-15V361c0-8.291-6.709-15-15-15zM256 226c57.898 0 105-47.1 105-105S313.898 16 256 16 151 63.1 151 121s47.102 105 105 105zM241 91c0-8.401 6.599-15 15-15s15 6.599 15 15v15h15c8.401 0 15 6.599 15 15 0 8.399-6.599 15-15 15h-30c-8.401 0-15-6.601-15-15z"
    />
</svg>