Square roots of a fibonacci number of moons. Measured from New Moons after the Spring Equinox and Full moons following a Winter Solstice, can be good indicators of local tops and bottoms.
Top is calculated forward and backward from the first new moon after the Spring Equinox 4/11/21
Bottom (red) is measured back from the first full moon following the upcoming Winter Solstice 1/17/22
Bottom (purple) is measured from the full moon following the 2020 Winter Solstice 12/29/20
Top is calculated forward and backward from the first new moon after the Spring Equinox 4/11/21
Bottom (red) is measured back from the first full moon following the upcoming Winter Solstice 1/17/22
Bottom (purple) is measured from the full moon following the 2020 Winter Solstice 12/29/20