For guidance purposes only - You must get outside and look to the heavens. See 'How to determine Day 1 - New Moon Day' (link below)
Yah Moving his Faithful Back to Heavenly Calendar Rhythm
The Full Moon is in perfect alignment with the concept of 'Chodesh' (POLISHED & SHINY, RESTORED, RENEWED -- Chet-Dalet-Shin)
Only a Fully Restored 'Rosh' (Head) Full Moon could be considered as ruling the night. Evidence shows that the 'Perpetual' Babylonian Dark Crescent calendar is not the original 'Holy' Full Moon calendar of Exodus and Ezekiel.
How the Fullness of the Moon relates to becoming who you are supposed to be.
Early Americans and their Exodus
Then the Creator said: H1961 Let there be H3974 luminaries H7549 in the firmament H8064 of the heaven H914 to divide H996 between H3117 the day H996 from H391 the night; H1961 and let (the luminaries) be H226 a miraculous banner flag of remembrance, H4150 for the appointed times of sacred gatherings (festivals, sabbaths), H3117 and for days, H8141 and years
Isaiah 58:13 " ...the new moon (day) of the Lord a thing to be honoured"
1 Samuel 20:5 "Tomorrow is the new moon (day)..."
Ezekiel 46:1 "at the time of the new moon (day)"