None, except for leap year. On leap year, one extra day is added to February to even out the amount of days in a year because there are 365 and 1/4th days in a year. So, leap year occurs only once every four years.
______________________________
Trick question: ALL of the months have 28 days. Most of them have more.
one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty one twenty two twenty three twenty four twenty six twenty seven twenty eight twenty nine thirty thirty one thirty two thirty three thirty four thirty five thirty six thirty seven thirty eight thirty nine forty forty one forty two forty three forty four forty five forty six forty seven forty eight forty nine fifty
All months have twenty-eight days.Only February has only twenty-eight days.
12 Months
Eight hundred twenty-one million, eight hundred thirty-seven thousand, ten.
38.27 = thirty-eight and twenty-seven hundredths.
All of them
Seven and eight hundred forty-one thousandths.
Twenty-eight and thirty-seven ten-thousandths.
Ten million, seven hundred thirty-seven thousand, four hundred twenty-eight.
Seven hundred eighty-six point four two eight five seven.
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one two three four five six seven eight nine ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty twenty one twenty two twenty three twenty four twenty five twenty six twenty seven twenty eight twenty nine thirty thirty one thirty two thirty three thirty four thirty five thirty six thirty seven thirty eight thirty nine forty forty one forty two forty three forty four forty five forty six forty seven forty eight forty nine fifty fifty one fifty two fifty three fifty four fifty five fifty six fifty seven fifty eight fifty nine sixty sixty one sixty two sixty three sixty four sixty five sixty six sixty seven sixty eight sixty nine seventy seventy one seventy two seventy three seventy four seventy five seventy six seventy seven seventy eight seventy nine eighty eighty one eighty two eighty three eighty four eighty five eighty six eighty seven eighty eight eighty nine ninety ninety one ninety two ninety three ninety four ninety five ninety six ninety seven ninety eight ninety nine one hundred