Reoccurring Date Formula with static Day of the Mo...

[Jon_Frampton]

If I want to specify the last day of the current month in a cell as a date, what is the syntax? In Google Sheets & MS Excel it is EOMONTH (End Of Month).

EDIT - HERE IS THE FORMULA - THANKS KAMILLE & JUSTIN

DATETIME_FORMAT(
    DATEADD(
        DATETIME_PARSE(
            DATETIME_FORMAT(
                TODAY(),
                'YYYY'
            ) & '-' &
            (VALUE(
                DATETIME_FORMAT(
                    TODAY(),
                    'MM'
                )
            )
             + 1)
             & '-01',
            'YYYY-MM-DD'
        ) , -1, 'day'
    )
    , "MM-DD-YY"
)

[Kamille_Parks]

There is probable a more elegant way to do this, but you can try this formula:
DATETIME_FORMAT(DATEADD(DATETIME_FORMAT(DATETIME_FORMAT(TODAY(),'YYYY')&'-'&DATETIME_FORMAT(TODAY(),'MM')+1&'-01','YYYY-MM-DD'),-1,'day'),'DD')

[Jon_Frampton]

Thank You Kamille. This provided the number 31. Which technically speaking is what I asked. I will tweak this code to return the EOMONTH as a date. So, rather than 31, it will return 03-31-2019. Thanks for taking the time to put together that formula, it’s much appreciated.

Also - note to @Airtable, please consider adding EOMONTH functionality. As you can see it is quite complicated to write this as a function.

[Kamille_Parks]

If you remove the outer date time format portion of the formula you should get your results as a full date as opposed to just the day.

[Jon_Frampton]

DATEADD(DATETIME_FORMAT(DATETIME_FORMAT(TODAY(),‘YYYY’)&’-’&DATETIME_FORMAT(TODAY(),‘MM’)+1&’-01’,‘YYYY-MM-DD’),-1,‘day’) - resulted in: 12/30/2000

DATETIME_FORMAT(DATETIME_FORMAT(TODAY(),‘YYYY’)&’-’&DATETIME_FORMAT(TODAY(),‘MM’)+1&’-01’,‘YYYY-MM-DD’) - resulted in 2001-01-01

So, I am not sure that we are on the same page. :- :grinning_face_with_smiling_eyes:

[Justin_Barrett]

I messed with the formula a bit, and was able to get it working.

DATEADD(
    DATETIME_PARSE(
        DATETIME_FORMAT(
            TODAY(),
            'YYYY'
        ) & '-' &
        (VALUE(
            DATETIME_FORMAT(
                TODAY(),
                'MM'
            )
        )
         + 1)
         & '-01',
        'YYYY-MM-DD'
    ) , -1, 'day'
)

[Jon_Frampton]

Thank You Justin. For me your formula returned 3/30/2019, which is close enough for what I am trying to do.

I still recommend to AirTable to place End of Month into the date options. Thanks Again Justin.

[Justin_Barrett]

Sorry. I overlooked the formatting you’d requested. That’s easily addressed by wrapping DATETIME_FORMAT around the above. Here’s the full formula with that addition:

DATETIME_FORMAT(
    DATEADD(
        DATETIME_PARSE(
            DATETIME_FORMAT(
                TODAY(),
                'YYYY'
            ) & '-' &
            (VALUE(
                DATETIME_FORMAT(
                    TODAY(),
                    'MM'
                )
            )
             + 1)
             & '-01',
            'YYYY-MM-DD'
        ) , -1, 'day'
    )
    , "MM-DD-YY"
)

[Christophe_Spe1 · Accepted solution]

When using this formula Airtable does not seem to read this as a ‘date’ making it difficult to use the End of Month date in other formulas.

I found using the below formula to be easier and enables the use of the date in other formulas, such as findind how many days left until the end of the month.

Formula: DATEADD(DATEADD({Start Date},1,‘month’),-DAY(DATEADD({Start Date},1,‘month’)),‘days’)

If my start date is ‘01/01/2019’ then the formula will result in ‘31/01/2019’ and will pick this up in date format.

If you are wanting the start of a month, then I use this formula:
DATEADD(DATEADD({End Date},1,‘days’),-DAY({End Date}),‘days’)

Hope this is helpful :slightly_smiling_face:

[Kamille_Parks]

Similarly, the formula I’ve been using in practice as of late is much more simple as well. Its much like the one you provided, but more general so it only requires one reference to another field:

DATEADD(DATEADD(DATETIME_FORMAT({Date in Question},'YYYY-MM-01'),1,'month'),-1,'day')

Kamille_Parks:

There is probable a more elegant way to do this

^ Nice try, Old Me. haha